[5.3] Joomla Dialog add support for aria-label

[Fedik]

Pull Request for Issue #45429

Summary of Changes

Add support for aria-label and aria-labelledby attributes for dialog in the JoomlaDialog.
The attributes can be set manually during dialog creation.
When it is empty the attribute will be set automatically based on the header text.

Testing Instructions

Apply patch.
Run npm install.
Open any dialog in backend and check source code for it.

Actual result BEFORE applying this Pull Request

Dialog does not have aria-label attribute

Expected result AFTER applying this Pull Request

Dialog has an aria-label attribute.

Link to documentations

Please select:

• Documentation link for docs.joomla.org:
• No documentation changes for docs.joomla.org needed
• Pull Request link for manual.joomla.org: TBD
• No documentation changes for manual.joomla.org needed

[ceford]

I have tested this item ✅ successfully on 8894fd9

With the patch, the Batch process dialog has this:

<dialog aria-label="Batch process the selected articles" style="width: 100%; max-width: 800px; height: fit-content;" open="">

Without the patch the aria-label is absent.

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[alikon]

I have tested this item ✅ successfully on 8894fd9

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_{This comment was created with the J!Tracker Application at issues.joomla.org/tracker/joomla-cms/46090.}

[alikon]

RTC

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_{This comment was created with the J!Tracker Application at issues.joomla.org/tracker/joomla-cms/46090.}

[brianteeman]

I have tested this item ✅ successfully on 8894fd9

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_{This comment was created with the J!Tracker Application at issues.joomla.org/tracker/joomla-cms/46090.}

[LadySolveig]

Thank you for the fix @Fedik great teamwork - bringing up and clarifying the issue and also for testing @ceford @alikon @brianteeman @chmst @bembelimen