[5.1] Reset the cached layout data during FormField setup()

[sousa9g]

Summary of Changes

Joomla 5.1 added a new method to cache the form field layout data (collectLayoutData()). While it is great for performance, it is now impossible to reset the cached layout data.

In the FormField setup(). The input and labels are cleared:

$this->input = null;
$this->label = null;

However with the introductions of memory caching layout data, those lines don't work anymore, as the input is always rendered using the cached layout data.

Testing Instructions

Actual result BEFORE applying this Pull Request

Expected result AFTER applying this Pull Request

Link to documentations

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• Documentation link for docs.joomla.org:

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• Pull Request link for manual.joomla.org:

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[Fedik]

I have tested this item ✅ successfully on fd1f6c5

On review. It doing the same as $this->input = null; $this->label = null;

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[viocassel]

I have tested this item ✅ successfully on fd1f6c5

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[Quy]

RTC

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[LadySolveig]

Thank you @sousa9g 🚀 and also for review and testing @Fedik and @viocassel 💚