Handle extra arguments for internal overrideArgs

[bwoebi]

Description

This fixes:

• overrideArguments usage when changing a by-ref parameter
• overrideArguments usage when optional arguments to internal functions are being set
• properly handles freeing of garbage in overrideArguments for internal functions on PHP 8 when more arguments are provided than initially set.

Readiness checklist

• (only for Members) Changelog has been added to the release document.
• Tests added for this feature/bug.

Reviewer checklist

• Appropriate labels assigned.
• Milestone is set.
• Changelog has been added to the release document. For community contributors the reviewer is in charge of this task.