segregate test files in a3p proposals #39646

Job	Run time
pre_check / Check preconditions and cancel previous jobs	6s
test-docker-build	15m 13s
deployment-test	30m 26s
getting-started (link-cli/yarn)	10m 26s
getting-started (registry/yarn)	14m 15s
getting-started (registry/npm)	14m 21s
getting-started (registry/npx)	14m 31s
test-multichain-e2e / Multichain E2E (Orchestration API) / multichain-e2e	37m 34s
test-multichain-e2e / Multichain E2E (Fast USDC) / multichain-e2e	16m 46s
finalize-integration-result	4s
	2h 33m 42s

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