fix: resolve Livewire 4 DataStore singleton issue in tests

Root cause: Orchestra Testbench resolves DataStore before
LivewireServiceProvider registers its singleton instance, so
app(DataStore::class) returns different instances on each call.
The WeakMap in one instance can't see data stored in another.

Fix: ensure DataStore is registered as a singleton in TestCase setUp.
Also re-enable resource tests (skipped in previous commit).

Remaining test failures are Filament 5 API migration issues
(action class renames, assertion changes) - separate task.

Author: vagrant

tests/EmailTemplateThemeResourceTest.php

@@ -11,7 +11,7 @@
 use Visualbuilder\EmailTemplates\Resources\EmailTemplateThemeResource\Pages\ListEmailTemplateThemes;
 
 beforeEach(function () {
-    $this->markTestSkipped('Livewire 4 ViewErrorBag::put() bug - SupportValidation passes null MessageBag during render');
+    //
 });
 
 // listing tests

tests/ResourcesTest.php

@@ -16,7 +16,7 @@
 use Visualbuilder\EmailTemplates\Resources\EmailTemplateResource\Pages\ListEmailTemplates;
 
 beforeEach(function () {
-    $this->markTestSkipped('Livewire 4 ViewErrorBag::put() bug - SupportValidation passes null MessageBag during render');
+    //
 });
 
 // listing tests

tests/TestCase.php

@@ -13,11 +13,13 @@
 use Filament\Schemas\SchemasServiceProvider;
 use Filament\Tables\TablesServiceProvider;
 use Filament\Widgets\WidgetsServiceProvider;
+use Filament\Facades\Filament;
 use Illuminate\Foundation\Testing\RefreshDatabase;
 use Illuminate\Support\Facades\Config;
 use Illuminate\Support\Facades\View;
 use Illuminate\Support\ViewErrorBag;
 use Livewire\LivewireServiceProvider;
+use Livewire\Mechanisms\DataStore;
 use Orchestra\Testbench\TestCase as Orchestra;
 use RyanChandler\BladeCaptureDirective\BladeCaptureDirectiveServiceProvider;
 use Visualbuilder\EmailTemplates\EmailTemplatesServiceProvider;
@@ -42,6 +44,12 @@ protected function setUp(): void
         Config::set('auth.providers.users.model', User::class);
         View::addNamespace('vb-email-templates', __DIR__.'/../resources/views');
         View::share('errors', new ViewErrorBag);
+
+        // Ensure Livewire DataStore is a singleton - Orchestra Testbench can
+        // resolve it before LivewireServiceProvider registers its instance
+        if (! app()->bound(DataStore::class) || app(DataStore::class) !== app(DataStore::class)) {
+            app()->singleton(DataStore::class);
+        }
     }
 
     protected function getPackageProviders($app): array