Clear CPT custom cache files correctly

[wordpressfan]

Description

Fixes #4508

This PR makes sure that we remove all custom cache files for custom post types are deleted properly.

Type of change

• Bug fix (non-breaking change which fixes an issue).

Detailed scenario

When we clear custom post type post (with any clearance action like editing the post), we should clear the archive page (shop page for woocommerce product CPT as an example), but when we have webp enabled (or any feature that creates custom cache file other than index.html or index.html_gzip) those custom cache files are kept there without being removed.

Technical description

Documentation

We just add the url (the whole folder) to the folders to be deleted.

New dependencies

N/A

Risks

I need to take from the expertise of @remyperona because he knows this part more than anyone else, do u think this may cause any issue for removing wrong cache files or so?

Mandatory Checklist

Code validation

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• I triggered all changed lines of code at least once without new errors/warnings/notices.
• I implemented built-in tests to cover the new/changed code.

Code style

• I wrote a self-explanatory code about what it does.
• I protected entry points against unexpected inputs.
• I did not introduce unnecessary complexity.
• Output messages (errors, notices, logs) are explicit enough for users to understand the issue and are actionnable.

Unticked items justification

All good.

Additional Checks

• In the case of complex code, I wrote comments to explain it.
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• I added error handling logic when using functions that could throw errors (HTTP/API request, filesystem, etc.)

[codacy-production]

Coverage summary from Codacy

See diff coverage on Codacy

Coverage variation	Diff coverage
Report missing for 5fb67a81	✅ 100.00% (target: 50.00%)

Coverage variation details

	Coverable lines	Covered lines	Coverage
Common ancestor commit (5fb67a8)	Report Missing	Report Missing	Report Missing
Head commit (b061cd9)	38788	17158	44.24%

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Diff coverage details

	Coverable lines	Covered lines	Diff coverage
Pull request (#7277)	1	1	100.00%

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[Mai-Saad]

@wordpressfan Thanks for the PR. please note that we have the following regression
1- product permalink is shop base
2- cache shop , product 1, product 2
3- edit product 1 or clear cache of product 1 from page edit
4- all shop folder is deleted including product 2 cache ==> on trunk product 2 isnot touched

[remyperona]

If you do it that way, you're going to delete cache of any child item in the permalink structure, that's why the deletion is not using the base but the filenames.

You need a different approach to handle the different cache files variations. Possibly with RegEx if it's usable (I don't remember right now), you could do something like index(.*).html.