.Net: Temporarily disable MongoDB integration tests (#9411)

### Motivation and Context

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Currently, we use `mongodb/mongodb-atlas-local` Docker image to perform
integration tests in our CI pipeline for MongoDB connector. It appeared
that sometimes vector search doesn't return any results, so the tests
are failing, and PR merge is blocked:

![Image](https://github.com/user-attachments/assets/3e1126dc-e219-46a0-89aa-6c5e898678bb)

This PR temporarily disables these integration tests until the root
cause will be found. Related issue:
#9410.

### Contribution Checklist

<!-- Before submitting this PR, please make sure: -->

- [x] The code builds clean without any errors or warnings
- [x] The PR follows the [SK Contribution
Guidelines](https://github.com/microsoft/semantic-kernel/blob/main/CONTRIBUTING.md)
and the [pre-submission formatting
script](https://github.com/microsoft/semantic-kernel/blob/main/CONTRIBUTING.md#development-scripts)
raises no violations
- [x] All unit tests pass, and I have added new tests where possible
- [x] I didn't break anyone 😄

Co-authored-by: Mark Wallace <[email protected]>

dotnet/src/IntegrationTests/Connectors/Memory/MongoDB/MongoDBVectorStoreRecordCollectionTests.cs

@@ -16,7 +16,10 @@ namespace SemanticKernel.IntegrationTests.Connectors.MongoDB;
 [Collection("MongoDBVectorStoreCollection")]
 public class MongoDBVectorStoreRecordCollectionTests(MongoDBVectorStoreFixture fixture)
 {
-    [Theory]
+    // If null, all tests will be enabled
+    private const string? SkipReason = "The tests are for manual verification.";
+
+    [Theory(Skip = SkipReason)]
     [InlineData("sk-test-hotels", true)]
     [InlineData("nonexistentcollection", false)]
     public async Task CollectionExistsReturnsCollectionStateAsync(string collectionName, bool expectedExists)
@@ -31,7 +34,7 @@ public async Task CollectionExistsReturnsCollectionStateAsync(string collectionN
         Assert.Equal(expectedExists, actual);
     }
 
-    [Fact]
+    [Fact(Skip = SkipReason)]
     public async Task ItCanCreateCollectionAsync()
     {
         // Arrange
@@ -44,7 +47,7 @@ public async Task ItCanCreateCollectionAsync()
         Assert.True(await sut.CollectionExistsAsync());
     }
 
-    [Theory]
+    [Theory(Skip = SkipReason)]
     [InlineData(true, true)]
     [InlineData(true, false)]
     [InlineData(false, true)]
@@ -98,7 +101,7 @@ public async Task ItCanCreateCollectionUpsertAndGetAsync(bool includeVectors, bo
         }
     }
 
-    [Fact]
+    [Fact(Skip = SkipReason)]
     public async Task ItCanDeleteCollectionAsync()
     {
         // Arrange
@@ -116,7 +119,7 @@ public async Task ItCanDeleteCollectionAsync()
         Assert.False(await sut.CollectionExistsAsync());
     }
 
-    [Fact]
+    [Fact(Skip = SkipReason)]
     public async Task ItCanGetAndDeleteRecordAsync()
     {
         // Arrange
@@ -140,7 +143,7 @@ public async Task ItCanGetAndDeleteRecordAsync()
         Assert.Null(getResult);
     }
 
-    [Fact]
+    [Fact(Skip = SkipReason)]
     public async Task ItCanGetAndDeleteBatchAsync()
     {
         // Arrange
@@ -172,7 +175,7 @@ public async Task ItCanGetAndDeleteBatchAsync()
         Assert.Empty(getResults);
     }
 
-    [Fact]
+    [Fact(Skip = SkipReason)]
     public async Task ItCanUpsertRecordAsync()
     {
         // Arrange
@@ -200,7 +203,7 @@ public async Task ItCanUpsertRecordAsync()
         Assert.Equal(10, getResult.HotelRating);
     }
 
-    [Fact]
+    [Fact(Skip = SkipReason)]
     public async Task UpsertWithModelWorksCorrectlyAsync()
     {
         // Arrange
@@ -232,7 +235,7 @@ public async Task UpsertWithModelWorksCorrectlyAsync()
         Assert.Equal("Test Name", getResult.HotelName);
     }
 
-    [Fact]
+    [Fact(Skip = SkipReason)]
     public async Task UpsertWithVectorStoreModelWorksCorrectlyAsync()
     {
         // Arrange
@@ -252,7 +255,7 @@ public async Task UpsertWithVectorStoreModelWorksCorrectlyAsync()
         Assert.Equal("Test Name", getResult.HotelName);
     }
 
-    [Fact]
+    [Fact(Skip = SkipReason)]
     public async Task UpsertWithBsonModelWorksCorrectlyAsync()
     {
         // Arrange
@@ -284,7 +287,7 @@ public async Task UpsertWithBsonModelWorksCorrectlyAsync()
         Assert.Equal("Test Name", getResult.HotelName);
     }
 
-    [Fact]
+    [Fact(Skip = SkipReason)]
     public async Task UpsertWithBsonVectorStoreModelWorksCorrectlyAsync()
     {
         // Arrange
@@ -304,7 +307,7 @@ public async Task UpsertWithBsonVectorStoreModelWorksCorrectlyAsync()
         Assert.Equal("Test Name", getResult.HotelName);
     }
 
-    [Fact]
+    [Fact(Skip = SkipReason)]
     public async Task UpsertWithBsonVectorStoreWithNameModelWorksCorrectlyAsync()
     {
         // Arrange
@@ -324,7 +327,7 @@ public async Task UpsertWithBsonVectorStoreWithNameModelWorksCorrectlyAsync()
         Assert.Equal("Test Name", getResult.HotelName);
     }
 
-    [Fact]
+    [Fact(Skip = SkipReason)]
     public async Task VectorizedSearchReturnsValidResultsByDefaultAsync()
     {
         // Arrange
@@ -355,7 +358,7 @@ public async Task VectorizedSearchReturnsValidResultsByDefaultAsync()
         Assert.Equal(1, searchResults.First(l => l.Record.HotelId == "key1").Score);
     }
 
-    [Fact]
+    [Fact(Skip = SkipReason)]
     public async Task VectorizedSearchReturnsValidResultsWithOffsetAsync()
     {
         // Arrange
@@ -388,7 +391,7 @@ public async Task VectorizedSearchReturnsValidResultsWithOffsetAsync()
         Assert.DoesNotContain("key2", ids);
     }
 
-    [Fact]
+    [Fact(Skip = SkipReason)]
     public async Task VectorizedSearchReturnsValidResultsWithFilterAsync()
     {
         // Arrange
@@ -420,7 +423,7 @@ public async Task VectorizedSearchReturnsValidResultsWithFilterAsync()
         Assert.DoesNotContain("key4", ids);
     }
 
-    [Fact]
+    [Fact(Skip = SkipReason)]
     public async Task ItCanUpsertAndRetrieveUsingTheGenericMapperAsync()
     {
         // Arrange

dotnet/src/IntegrationTests/Connectors/Memory/MongoDB/MongoDBVectorStoreTests.cs

@@ -10,7 +10,10 @@ namespace SemanticKernel.IntegrationTests.Connectors.MongoDB;
 [Collection("MongoDBVectorStoreCollection")]
 public class MongoDBVectorStoreTests(MongoDBVectorStoreFixture fixture)
 {
-    [Fact]
+    // If null, all tests will be enabled
+    private const string? SkipReason = "The tests are for manual verification.";
+
+    [Fact(Skip = SkipReason)]
     public async Task ItCanGetAListOfExistingCollectionNamesAsync()
     {
         // Arrange