Refactor focus management in FocusElements using callback refs #34331

Job	Run time
e2e-tests	6m 34s
visual-tests (test-tag-name-transformer)	9m 22s
visual-tests (theme-default)	9m 30s
visual-tests (theme-kern)	9m 6s
build-and-check	6m 6s
check-results	3s
	40m 41s

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