Remove enabling the Seven admin theme on new installations. After Claro was sat as the default admin theme

Problem/Motivation

#3085212: Redesign maintenance page
#3277057: Make Claro the default admin theme in Standard profile
#3066007: Roadmap to stabilize Claro
#3277053: Mark Claro as Stable

Drupal 9.4.0 was released on 15 Jun 2022 by: xjm

Followed up with Drupal 9.4.1 and 9.4.2

Seven was needed to style maintenance and update pages
Only kept having the Seven them enabled, because #3085212: Redesign maintenance page was not fixed yet

Proposed resolution

• Not to install the old Seven them on new installations.
• Now Claro has a style for the maintenance and update pages

Remaining tasks

• ✅ File an issue about this project
• ✅ Addition/Change/Update/Fix to this project
• ✅ Testing to ensure no regression
• ✅ Automated unit/functional testing coverage
• ➖ Developer Documentation support on feature change/addition
• ➖ User Guide Documentation support on feature change/addition
• ✅ Accessibility and Readability
• ✅ Code review from 1 Varbase core team member
• ✅ Full testing and approval
• ✅ Credit contributors
• ✅ Review with the product owner
• ✅ Update Release Notes and Update Helper on new feature change/addition
• ✅ Release varbase-9.0.7

Varbase update type

• ✅ No Update
• ➖ Optional Update
• ➖ Forced Update
• ➖ Forced Update if Unchanged

User interface changes

Varbase maintenance and update page. No need for Seven

API changes

• N/A

Data model changes

• N/A

Release notes snippet