Removes signature file adjacency check in TransparentCompiler

[TheAngryByrd]

Description

Comments out a check that can cause the TransparentCompiler to throw an exception if a signature file is next next to a source file.

Fixes #17082

Checklist

• Test cases added

• Performance benchmarks added in case of performance changes

• Release notes entry updated:

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  • More inlines for Result module. (PR #16106)
  • Correctly handle assembly imports with public key token of 0 length. (Issue #16359, PR #16363)
    *while! (Language suggestion #1038, PR #14238)

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cc @dotnet/fsharp-team-msft

[TheAngryByrd]

@dotnet-policy-service agree

[psfinaki]

Thanks!