Fix null reference errors in three CoE admin flows

[Copilot]

Three flows fail in v4.50.6: quarantine status flow when app owner is null, flow action details sync when flow definition is missing, and environment cleanup due to missing API parameter.

Changes

Admin | Set app quarantine status

• Guard Get_Maker with null check on _admin_appowner_value
• Use coalesce() fallback to admin email when maker lookup skips

Admin | Sync Template v3 (Flow Action Details)

• Wrap Parse_Flow_Definition in existence check before parsing
• Handle skipped parse state in downstream reset_permissions action

Env Request Cleanup

• Add required body/deleteReason: "Expiration" parameter to Remove-AdminEnvironment call (API v2022-05-01 requirement)

"parameters": {
  "environment": "@item()?['_coe_environment_value']",
  "api-version": "2022-05-01",
  "body/deleteReason": "Expiration"
}

Original prompt

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This section details on the original issue you should resolve

<issue_title>[CoE Starter Kit - BUG] ISSUE TITLE Admin | Set app quarantine status, Admin | Sync Template v3 (Flow Action Details) and Env Cleanup are failing</issue_title>
<issue_description>### Does this bug already exist in our backlog?

• I have checked and confirm this is a new bug.

Describe the issue

All the below flows are failing even after updating with the latest release

Flow "Admin | Set app quarantine status" is failing with error WorkflowOperationParametersRuntimeMissingValue. The 'inputs.parameters' of workflow operation 'Get_Maker' of type 'OpenApiConnection' is not valid. Error details: The resolved string values for the following parameters are invalid; they may not be null or empty: 'recordId'

Flow "Admin | Sync Template v3 (Flow Action Details)" is failing with error Action 'Parse_flow_definition' failed

Flow Env Request Cleanup is failing with error Action 'Delete_expired_Environment' failed: The delete reason was null or invalid. Valid values are: User, Tenant, Expiration, LinkedResourceDeleted, Manual, CommonDataServiceMigration, Application, Service, TeamDeleted, ConnectedGroupDeleted, CreateFailed, InactivityThreshold, DeletedByTenantPolicyEvaluation, InconsistencyDetection

Earlier ticket created for the same #10363

Expected Behavior

No response

What solution are you experiencing the issue with?

Core

What solution version are you using?

4.50.6

What app or flow are you having the issue with?

Admin | Set app quarantine status, Admin | Sync Template v3 (Flow Action Details) and Env Cleanup are failing

What method are you using to get inventory and telemetry?

Cloud flows

Steps To Reproduce

No response

Anything else?

No response</issue_description>

<agent_instructions>analyze the issue and provide the possible solution </agent_instructions>

Comments on the Issue (you are @copilot in this section)

• Fixes [CoE Starter Kit - BUG] ISSUE TITLE Admin | Set app quarantine status, Admin | Sync Template v3 (Flow Action Details) and Env Cleanup are failing #10448

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