Handle cases where the Signature generator fails catastrophically

[JamesWTruher]

PR Summary

In the profile collector, there are some cases when we attempt to generate a method signature the framework will generate a platform not supported exception which causes the profile generation to fail.

We're not yet shipping the collector as a standalone module (as we think we may change it in the future), but we would like the functionality to work correctly.

PR Checklist

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• Summarized changes
• Change is not breaking
• Make sure all .cs, .ps1 and .psm1 files have the correct copyright header
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