Update issuable state badge styles for Issues, MRs, and Epics

Summary

Updates state badge style for Issues, MRs, and Epics.

Screenshots

State Badges

	Desktop	Mobile
Issue (Open)
Issue (Closed)
Merge Request (Open)
Merge Request (Merged)
Merge Request (Closed)
Merge Request (w/ ff updated_mr_header, see !86019 (merged))
Epic (Open)
Epic (Closed)
Test Case (Open)
Test Case (Archived)

Related Issues

#330569

.gitlab/issue_templates/Feature Flag Cleanup.md

@@ -41,7 +41,7 @@ Are there any other stages or teams involved that need to be kept in the loop?
       the feature can be officially announced in a release blog post.
     - [ ] `/chatops run auto_deploy status <merge-commit-of-cleanup-mr>`
 - [ ] Close [the feature issue](ISSUE LINK) to indicate the feature will be released in the current milestone.
-- [ ] Clean up the feature flag from all environments by running these chatops command in `#production` channel:
+- [ ] If not already done, clean up the feature flag from all environments by running these chatops command in `#production` channel:
     - [ ] `/chatops run feature delete <feature-flag-name> --dev`
     - [ ] `/chatops run feature delete <feature-flag-name> --staging`
     - [ ] `/chatops run feature delete <feature-flag-name>`