Remove title attribute from Customizer widget area selection

[sabernhardt]

Related: #24766

The Customizer's legacy Widgets interface includes a title attribute for the sidebar description.

If the description is worth showing, then changing it from a tooltip to visible text below the sidebar name would make it accessible to more people. If it is unnecessary, the title attribute could simply be removed.

To find the sidebar list:

1. Install and activate the Classic Widgets plugin.
2. Activate a classic theme with multiple widget areas, such as Twenty Twenty.
3. Go to the Customizer.
4. Click the Widgets button.
5. Click on one of the widget areas.
6. Click the "Reorder (widgets)" button.
7. Click on the "move to another area" button. This is the first icon of three, using the same arrow on a box that indicates external links in other places.

Option 1: Show sidebar name and description, and remove the title attribute.

Trac 62836

Option 2: Remove the title attribute with sidebar description, and then the option only shows the sidebar name.

Trac 62836

[mukesh27]

Thanks @sabernhardt for the ticket and PR with possible options.

I go with Option 1.

[joedolson]

I would agree with option 1. These descriptions are significant, and I think they should be exposed to users.

[audrasjb]

Yeah let's implement the first option.

Closing in favor of option 1

[audrasjb]

In 59676:

Customize: Show sidebar's description below its name in Customizer Widgets sidebar list.

This is part of an effort to reduce title attribute usage in WordPress Admin. This changeset updates the Customizer Widgets sidebar list to show sidebar name and description (as these informations may benefit to everyone), and remove the title attribute.

Follow-up to [22439], [27548], [31513], [32991], [50804], [53414], [59675].

Props karlgroves, sabernhardt, mukesh27, joedolson.
Fixes #62836.
See #24766.

committed in https://core.trac.wordpress.org/changeset/59676