chore(js-ts): Convert app/util/test/utils.js to TypeScript #33346

Job	Run time
check-diff	7m 15s
dedupe	2m 0s
scripts (lint)	3m 17s
js-bundle-size-check	6m 31s
scripts (lint:tsc)	2m 14s
scripts (audit:ci)	1m 55s
unit-tests (1)	5m 19s
scripts (test:depcheck)	2m 8s
unit-tests (2)	5m 34s
scripts (test:tgz-check)	1m 50s
unit-tests (3)	5m 24s
unit-tests (4)	5m 36s
unit-tests (5)	5m 22s
unit-tests (6)	5m 11s
unit-tests (7)	5m 32s
Check workflows	7s
unit-tests (8)	5m 23s
unit-tests (9)	5m 14s
unit-tests (10)	5m 18s
merge-unit-tests	2m 59s
sonar-cloud	1m 35s
sonar-cloud-quality-gate-status	4s
All jobs pass	1s
Check all jobs pass	1s
	1h 25m 50s

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