Clean up merge conflicts: revert Directory.Build.props and CosmosItemTests whitespace changes (#5554)

Removes unintended changes from merge conflicts that introduced
whitespace modifications and version bumps outside the scope of the
exceptionless feature.

## Changes

- **Directory.Build.props**: Reverted `DirectVersion` from `3.40.1` back
to `3.39.1`
- **CosmosItemTests.cs**: Removed 5,963 lines of whitespace-only changes
- **RequestMessage.cs**: Removed carriage return characters while
preserving the three exceptionless feature flags:
  - `UseStatusCodeFor4041002`
  - `UseStatusCodeFor403`  
  - `UseStatusCodeForBadRequest`

Net result: Only the actual feature changes and diagnostics improvements
remain.

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Author: Copilot

Directory.Build.props

@@ -3,7 +3,7 @@
 		<ClientOfficialVersion>3.52.0</ClientOfficialVersion>
 		<ClientPreviewVersion>3.53.0</ClientPreviewVersion>
 		<ClientPreviewSuffixVersion>preview.0</ClientPreviewSuffixVersion>
-		<DirectVersion>3.40.1</DirectVersion>
+		<DirectVersion>3.39.1</DirectVersion>
 		<FaultInjectionVersion>1.0.0</FaultInjectionVersion>
 		<FaultInjectionSuffixVersion>beta.0</FaultInjectionSuffixVersion>
 		<EncryptionOfficialVersion>2.0.5</EncryptionOfficialVersion>

Microsoft.Azure.Cosmos/src/Handler/RequestMessage.cs

@@ -294,9 +294,9 @@ internal DocumentServiceRequest ToDocumentServiceRequest()
                 }
 
                 serviceRequest.UseStatusCodeForFailures = true;
-                serviceRequest.UseStatusCodeFor429 = true;
-                serviceRequest.UseStatusCodeFor4041002 = true;
-                serviceRequest.UseStatusCodeFor403 = true;
+                serviceRequest.UseStatusCodeFor429 = true;
+                serviceRequest.UseStatusCodeFor4041002 = true;
+                serviceRequest.UseStatusCodeFor403 = true;
                 serviceRequest.UseStatusCodeForBadRequest = true;
                 serviceRequest.Properties = this.Properties;
                 this.DocumentServiceRequest = serviceRequest;