Support hidden label in fieldset

[josefbehr]

• Changes have been thoroughly tested to not break existing functionality.
• New functionality has been documented or existing documentation has been updated to reflect changes.
• Visual changes are explained in the PR description using a screenshot/recording of before and after.

before:

after:

[what-the-diff]

PR Summary

• Enhanced User Interface Controls
  The implementation of the :label-hidden="$isLabelHidden()" attribute in the fieldset.blade.php file across several directories - namely packages/forms, packages/infolists, and packages/support - improves the usability of our web elements. This change makes it possible to hide and show labels dynamically, providing greater control over the user interface experience.

[josefbehr]

I know that the label can be hidden by just setting an empty string as the label, but I think it should respect the hiddenLabel() method as well, which also enables dynamically showing or hiding the label.

[zepfietje]

Thanks for the PR, @josefbehr.
I've updated the implementation.
However, I think we should potentially still output the label, but add sr-only.

[danharrin]

We should add a label-hidden attribute to the fieldset Blade component that handles sr-only

[zepfietje]

We should add a label-hidden attribute to the fieldset Blade component that handles sr-only

Agree. Mark as ready for review when you've handled that, @josefbehr. 🙂

[josefbehr]

done