🧹 [code health improvement] Remove empty catch block in tests

[xm-i]

🎯 What:

The code health issue addressed is an empty catch (OperationCanceledException) { } block in SaveRangeContentOperationTests.cs.

💡 Why:

Using an empty catch block in tests masks the actual outcome and reduces the expressiveness of the test. Replacing it with await task.ShouldThrowAsync<OperationCanceledException>(); explicitly asserts that the cancellation happened as expected, improving maintainability and readability.

✅ Verification:

• Confirmed that the codebase uses the Shouldly assertion library.
• Verified that OperationCanceledException is indeed expected when cts.Cancel() is called before awaiting the task in ExecuteAsync_Cancel_ShouldStopEarly.
• Attempted to run the specific test using dotnet test, though the command timed out in the current environment, the change is a standard and safe refactoring in .NET testing.

✨ Result:

The test code is now cleaner and follows better testing practices by using explicit assertions for expected exceptions.

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PR created automatically by Jules for task 495810483704442861 started by @xm-i

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