Use the layout to render the user params fieldsets

[laoneo]

Summary of Changes

The params fieldsets in the user details should be rendered the same way as in other parts of Joomla, trough a layout.

Testing Instructions

Edit a user in the back end. The same form should be shown as without the patch, no changes.

This is a follow up PR from the custom fields project, issue is joomla-projects/custom-fields#139.

[brianteeman]

I have tested this item ✅ successfully on 12eaa6d

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_{This comment was created with the J!Tracker Application at issues.joomla.org/joomla-cms/10887.}

[ghazal]

I have tested this item ✅ successfully on 12eaa6d

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_{This comment was created with the J!Tracker Application at issues.joomla.org/joomla-cms/10887.}

[brianteeman]

RTC

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_{This comment was created with the J!Tracker Application at issues.joomla.org/joomla-cms/10887.}

[laoneo]

Thanks!