[5.1] Use Dialog field for Modal_Contact

[Fedik]

Summary of Changes

Changing Modal_Contact field to use new modal dialog.
The same as #40462 but for Contact.

Testing Instructions

Run npm install.

Create a menu for Contact item,
Select/edit value in "Choose a Contact" field.

Edit an Article and use insert Contact button.

Actual result BEFORE applying this Pull Request

Works

Expected result AFTER applying this Pull Request

Works

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

Reference:

• [5.0] Generic ModalSelect field #40462

[Quy]

I have tested this item ✅ successfully on 7b694c1

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[viocassel]

I have tested this item ✅ successfully on 7b694c1

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_{This comment was created with the J!Tracker Application at issues.joomla.org/tracker/joomla-cms/42326.}

[Quy]

RTC

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_{This comment was created with the J!Tracker Application at issues.joomla.org/tracker/joomla-cms/42326.}

[LadySolveig]

Thank you @Fedik !
And thanks for testing @viocassel @Quy