TIKA-4705 -- resourceName of tar file in nested tarball should not contain tarball's parent directories

[iachimoe]

…rent directories of its parent gzip file, plus fixing typo where '.' was missing from gz extension

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[iachimoe]

For some reason I have had some problems running maven locally against main, so I'm not sure at the time of writing if all tests/style checks pass

[Copilot]

Pull request overview

This PR addresses TIKA-4705 by ensuring that the derived resourceName for a decompressed nested tarball does not inherit parent-directory components from the enclosing gzip entry, and it fixes a .gz extension check typo.

Changes:

• Strip parent path components from RESOURCE_NAME_KEY before deriving the uncompressed name in CompressorParser.
• Fix the extension check from endsWith("gz") to endsWith(".gz").
• Add a regression test and a new nested tar test fixture to validate RESOURCE_NAME_KEY, INTERNAL_PATH, and EMBEDDED_RESOURCE_PATH behavior.

Reviewed changes

Copilot reviewed 2 out of 3 changed files in this pull request and generated no comments.

File	Description
.../RecursiveParserWrapperTest.java	Adds testNestedTarball() to validate nested tar-in-gz resource naming and embedded paths.
.../test-nested-tarball.tar	Adds a new test fixture containing a nested .tgz to reproduce the original issue.
.../CompressorParser.java	Normalizes parent RESOURCE_NAME_KEY to a basename before mapping .tgz/.gz/... to the uncompressed name.

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