[BUG] Declared licence also appearing in discovered

[thompson-tomo]

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Describe the bug
When a license scan runs on https://rubygems.org/gems/diff-lcs/versions/1.6.2 it is detecting the declared licenses as including GPL-2.0-or-later which is correct. However then under Discovered Licenses it is including GPL-2.0-only due to including the license text in a copying.md file.

To Reproduce
Steps to reproduce the behavior:

1. Run fossa analyze ...
2. See error

Expected behavior
GPL-2.0-only doesn't appear under the discovered licenses due to it already being explicitly declared as being GPL-2.0-or-later. Alternatively it should appear as GPL-2.0-or-later due to the expression declaring it as or-later.

Debug bundle
Please run fossa with the --debug flag and attach the resulting fossa.debug.zip file here.

Additional context
Project is at https://app.fossa.com/projects/custom%2B162%2Fgithub.com%2Fopen-telemetry%2Fopentelemetry-ruby-contrib/refs/branch/main/84f7a35d51e112ad6886c676bafa0a120377b4af/preview?revisionScanId=100283376

[github-actions]

Thank you @thompson-tomo for creating this issue. If this is in regards to a defect, product question or feature request: you should use our support portal at https://support.fossa.com to file a request, as you would receive more immediate support.