:focus indicator not visually distinct in ui dialog in Bartik, Seven, Classy

Problem/Motivation

This issue is a follow-up issue based on accessibility feedback from rainbreaw → .

See #2994702-107: Allow editors to alter embed-specific metadata, as well as `data-align` and `data-caption` →

Dialog UI in standard profile (with Bartik theme) should use an outline around form elements when tabbing, as does demo umami profile.

Demo umami outline.

Standard profile, highlight, but no outline.

Proposed resolution

Suggested improvement, add outline:

Remaining tasks

• Review
• Commit