Search for unlinked files should not include current bib file

[koppor]

1. Create test-pdfs.bib file in src\test\resources\pdfs
2. Set . as General file directory
3. Execute "Find unlinked files"

The result contains test-pdfs.bib:

I agree that other .bib files should be contained (and maybe treated differently later; but special case), but not the currently opened bib file.

[NS404]

Hello!
I would like to work on this issue

[github-actions]

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