feat: Accessible resize handles with keyboard activation #4878

Job	Run time
dry-run / Build global-styles	22s
dry-run / Build jest-preset	17s
dry-run / Build browser-test-tools	2m 51s
dry-run / Build collection-hooks	54s
dry-run / Build documenter	2m 12s
dry-run / Build test-utils	1m 7s
dry-run / Build theming-core	1m 1s
dry-run / Build component-toolkit	1m 14s
dry-run / Build components	4m 52s
dry-run / Components accessibility tests shard (1)	1m 16s
dry-run / Components accessibility tests shard (2)	10m 31s
dry-run / Components unit tests	7m 18s
dry-run / Components integration tests	23m 23s
dry-run / Build board components	3m 46s
dry-run / Components accessibility tests shard (3)	10m 11s
dry-run / Components accessibility tests shard (4)	1m 3s
dry-run / Components accessibility tests shard (5)	11m 14s
dry-run / Components accessibility tests shard (6)	10m 24s
dry-run / Demos tests	12m 12s
dry-run / Components accessibility tests	3s
	1h 46m 11s

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