Use search instead of findMany in relation pickers #15278

Job	Run time
front-sb-test-performance	8m 21s
front-sb-build	9m 34s
front-task (lint)	3m 16s
front-task (typecheck)	5m 12s
front-task (test)	3m 44s
front-sb-test (pages)	3m 39s
front-chromatic-deployment	0s
front-sb-test-shipfox (pages)	18m 23s
front-sb-test (modules)	3m 22s
front-sb-test-shipfox (modules)	18m 33s
	1h 14m 4s

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