Remember project ordering when inside groups

What does this MR do?

Persists project sort order across both the project dashboard and the group projects list.

At the same time, added a missing option to sort projects by name (desc) on the dashboard.

Addresses request with 100 upvotes #18871 (closed)

Screenshots (strongly suggested)

Does this MR meet the acceptance criteria?

Conformity

• Changelog entry
• Code review guidelines
• Merge request performance guidelines
• Style guides

Availability and Testing

• Review and add/update tests for this feature/bug. Consider all test levels. See the Test Planning Process.
• Tested in all supported browsers
• Informed Infrastructure department of a default or new setting change, if applicable per definition of done