Fix GH-12730 - extract lost permission on linux

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compute file index once to avoid multiple searches
constify file name

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Notice: I consider this as a behavior change so only to apply in 8.4+ (and zip extension 1.23.0)
rather than a bugfix (8.3+ and 1.22.4)

Need to check if restoring perm may raise security issues

• creating an executable from an untrusted archive
• extracting directory with 000 permissons (so its removal will fail)

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Too problematic
Also easy to do in user space using example in
https://www.php.net/manual/en/ziparchive.getexternalattributesindex.php