Adding "global::" namespace prefix to avoid namespace conflict inside generated executor

[kshyju]

Fixes #1816

Pull request checklist

• My changes do not require documentation changes
  • Otherwise: Documentation issue linked to PR
• My changes should not be added to the release notes for the next release
  • Otherwise: I've added my notes to release_notes.md
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Additional information

Additional PR information

[jviau]

This is an aside to the problem at hand, but I wonder if we should use RootNamespace from the project for this files namespace?

[kshyju]

This is an aside to the problem at hand, but I wonder if we should use RootNamespace from the project for this files namespace?

Yes. some thing we can consider for all src generators. IIRC, I tried that route and found out that root namespace is not always a non null value. Let me see I can go back and check my repro and we can sync on this.

[kshyju]

The fix is released in 1.14.1

https://github.com/Azure/azure-functions-dotnet-worker/releases/tag/sdk-1.14.1