chore: Add alert/flash content replacement runtime API #9181

Job	Run time
dry-run / Build browser-test-tools	1m 11s
dry-run / Build collection-hooks	30s
dry-run / Build documenter	1m 4s
dry-run / Build global-styles	18s
dry-run / Build jest-preset	17s
dry-run / Build test-utils	33s
dry-run / Build component-toolkit	50s
dry-run / Build theming-core	45s
dry-run / Build components	3m 10s
dry-run / Build code view components	1m 0s
dry-run / Build board components	2m 6s
dry-run / Build chat components	1m 23s
dry-run / Components accessibility tests shard (1)	48s
dry-run / Components integration tests	17m 10s
dry-run / Components accessibility tests shard (2)	8m 33s
dry-run / Components motion tests	1m 12s
dry-run / Components unit tests	3m 54s
dry-run / Components accessibility tests shard (3)	8m 53s
dry-run / Components accessibility tests shard (4)	54s
dry-run / Components accessibility tests shard (5)	8m 53s
dry-run / Components accessibility tests shard (6)	9m 6s
dry-run / Demos tests	7m 33s
dry-run / Components accessibility tests	1s
	1h 20m 4s

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