fix unzip pattern and strip_root should be used together

[jusito]

Changelog: Bugfix for unzip because it should be possible to use pattern and strip_root at the same time.
fixes #14455

Found today that during archive extraction pattern and strip_root can't be used together. Same as in the related issue I would expect that pattern is applied before strip_root but actually they currently can't be used together at all.

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• If the issue has missing info, explain the purpose/use case/pain/need that covers this Pull Request.
  • no info required because expected behaviour restored
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  • I guess this doesn't apply here?

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