Merge PR #5710: Expand OTel exception handling for Azure Functions compatibility

[Copilot]

Changes proposed in this request

Merges changes from PR #5710 (fork: fowl2:patch-1) into AzureAD repo branch to enable CI test execution.

Core change: Expands exception handling in AbstractPlatformProxy.InternalGetOtelInstrumentation() to catch TypeLoadException and TypeInitializationException alongside existing FileNotFoundException.

catch (Exception ex) 
when (ex is FileNotFoundException
         or TypeLoadException
         or TypeInitializationException)

Context: In-process Azure Functions with older System.Diagnostics.DiagnosticSource versions throw TypeLoadException when OTel initialization fails. Previously only FileNotFoundException was caught, causing unhandled exceptions.

Testing

Changes originate from external contributor PR. CI workflows now executing on this branch to validate compatibility across target environments.

Performance impact

None. Exception handling path only executes on initialization failure.

Documentation

• All relevant documentation is updated.

Original prompt

Create a new branch and merge the changes from tis PR to that branch. Then the tests will run on that branch as the tests do not run on forks, so we merge that branch. Help me do that. We will simply merge this fork to a new branch and merge the new branch to main

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