Tests: Add missing `@covers` tags for some rewrite tests. #54029

Job	Run time
E2E Tests / SCRIPT_DEBUG disabled	4m 21s
E2E Tests / SCRIPT_DEBUG enabled	4m 34s
Slack Notifications / Prepare notifications	5s
Slack Notifications / Success notifications	4s
Slack Notifications / Failure notifications	0s
Slack Notifications / Fixed notifications	0s
Slack Notifications / Cancelled notifications	0s
Failed workflow tasks	0s
	9m 4s

Provide feedback