Description of problem:

A11Y serious issues found for the Settings as reported in the report

1. Settings - Notebook Images - Import new image -> When the modal dialog is activated, the keyboard focus is not placed on/in it.

2. Settings - Notebook Images - Import new image -> Screen readers can read content outside the modal dialog.

3. Settings - Notebook Images - Edit image -> When the modal dialog or similar element is closed, the keyboard focus is not returned to the triggering element.

4. Settings - Notebook Images - Delete image -> When the modal dialog is activated, the keyboard focus is not placed on/in it.

5.  Settings - Notebook Images - Delete image -> Screen readers can read content outside the modal dialog.

6.  Settings - Notebook Images - Delete image -> When the modal dialog or similar element is closed, the keyboard focus is not returned to the triggering element.

Prerequisites (if any, like setup, operators/versions):

Steps to Reproduce

1. Navigate to the Settings page
2. Use Deque Browser Extension Pro 7-day free trial and scan the page using Modal Guided Tests or use a screen reader i.e VoiceOver to navigate through UI 
3. Observe the issues reported above

Actual results:

Reported issues are present.

Expected results:

Reported issues are fixed.

Reproducibility (Always/Intermittent/Only Once):

Always

Build Details:

v1.20.1-8

Workaround:

N/A

Additional info: