UILD-749: Address accessibility issues

[zepheiryan]

https://folio-org.atlassian.net/browse/UILD-749

• Add landmarks to manage profile settings view
• Add ARIA labels to all component actions in manage profile settings editor
• Correct inverted header element hierarchy in authority / hubs search modal
• Descriptive text in authority / hubs search modal is styled too light (fixed previously)
• Use header elements in resource editor
• Update text in unsaved changes modal
• Manage profile settings modal titles too small when viewed in FOLIO (cf. https://folio-org.atlassian.net/browse/MODLD-999)
• Editor profile change modal requires a modal title
• Focus on modal close button when modal is first shown, for all modals (cf. https://folio-org.atlassian.net/browse/UILD-580)
• Keep focus cycling between in-modal buttons while modal is open instead of allowing background elements to receive focus

[github-actions]

Jest Unit Test Results

0 tests  ±0   0 ✅ ±0   0s ⏱️ ±0s
0 suites ±0   0 💤 ±0 
0 files   ±0   0 ❌ ±0 

Results for commit 139b033. ± Comparison against base commit 9412519.

♻️ This comment has been updated with latest results.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
100.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud