Add unit tests for save_mod_rewrite_rules() in src/wp-admin/includes/… #29520

Job	Run time
Core running from build / Linux	2m 33s
Core running from src / Linux	2m 20s
Core running from build / Windows	4m 4s
Core running from src / MacOS	2m 28s
Core running from src / Windows	4m 8s
Core running from build / MacOS	2m 44s
Slack Notifications	-1s
Failed workflow tasks	0s
	18m 16s

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