[5.2] Set column alias for BannerTable, fix warning on Save As Copy

[joomdonation]

Pull Request for Issue #44863.

Summary of Changes

This PR fixes small issue reported as #44863

Testing Instructions

• Use Joomla 5.2
• See [5.2] Undefined property: Joomla\Component\Banners\Administrator\Table\BannerTable::$title #44863, confirm the issue
• Apply patch, confirm the issue fixed.

Actual result BEFORE applying this Pull Request

• There is warning on PHP error log when Save As Copy a banner

Expected result AFTER applying this Pull Request

• No warning anymore

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:

• No documentation changes for manual.joomla.org needed

[QuyTon]

I have tested this item ✅ successfully on 011724e

Thank you!

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[ghost]

I have tested this item ✅ successfully on 011724e

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_{This comment was created with the J!Tracker Application at issues.joomla.org/tracker/joomla-cms/44864.}

[alikon]

RTC

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_{This comment was created with the J!Tracker Application at issues.joomla.org/tracker/joomla-cms/44864.}

[pe7er]

Thanks @joomdonation !

[joomdonation]

Thanks !