fix(jest): handle comma-separated paths in findRelatedTests #11386

Job	Run time
build	1m 20s
jest: loads jest.config.mjs	1m 28s
jest: --shard=1/2	1m 8s
jest: loads jest.config.ts	1m 17s
jest: multi-project filter	1m 13s
jest: --no-cache flag	1m 35s
jest: --find-related-tests comma-separated	2m 15s
jest: multi-project second app	1m 18s
jest: multi-project first app	2m 0s
jest: --reporters flag	1m 15s
jest: --shard=2/2	1m 23s
jest: --find-related-tests	1m 16s
jest: --test-name-pattern	1m 9s
jest: E2E multiple apps	2m 47s
jest: --test-path-patterns	1m 9s
jest: E2E simple app	1m 39s
jest: multi-project library	1m 18s
ci-pass	4s
publish	0s
	25m 34s

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