Don't throw an error on Path::clean() if $metaPath isn't found

[OctavianC]

Pull Request for Issue #43580 .

Summary of Changes

Path::find() returns false if the location cannot be found and Path::clean() throws an error if a non-string value is supplied - this makes menu item editing impossible for components that have been uninstalled.

Testing Instructions

See issue #43580

Actual result BEFORE applying this Pull Request

You must specify a non-empty path to clean

Expected result AFTER applying this Pull Request

Menu item editing page opens correctly

Link to documentations

Please select:

• Documentation link for docs.joomla.org:

• No documentation changes for docs.joomla.org needed

• Pull Request link for manual.joomla.org:

• No documentation changes for manual.joomla.org needed

[sousa9g]

Tested successfully, worked fine for me.

[bcraigie]

Thank you @OctavianC - I can confirm your change works. :-)

[chmst]

Thanks for testing, @sousa9g and @bcraigie. Could you please go to https://issues.joomla.org/tracker/joomla-cms/43604 and confirm your test with the "Test this" Button? Then the patch can be released.

[wilsonge]

Merging this between the two tests not registered in the tracker and on review

[bcraigie]

I have tested this item ✅ successfully on 437b42a

---

_{This comment was created with the J!Tracker Application at issues.joomla.org/tracker/joomla-cms/43604.}