[PHPDoc] Removed @internal param from IOConfigurationPass::processHandlers

[adriendupuis]

Question	Answer
JIRA issue	IBX-4929
Type	bug
Target Ibexa version	v4.0
BC breaks	no

IOConfigurationPass::processHandlers method is excluded of PHP API Reference because of an @internal tag. This tag doesn't seem relevant and I propose its removal.

Checklist:

• Provided PR description.
• Tested the solution manually.
• Provided automated test coverage.
• Checked that target branch is set correctly (main for features, the oldest supported for bugs).
• Ran PHP CS Fixer for new PHP code (use $ composer fix-cs).
• Asked for a review (ping @ibexa/engineering).

[sonarcloud]

Kudos, SonarCloud Quality Gate passed!   

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[alongosz]

👍

IOConfigurationPass::processHandlers method is excluded of PHP API Reference

@adriendupuis A question: what does this mean? I'm asking, because classes like that don't undergo BC and shouldn't be documented as PHP API. Asking for a broader context here :)