chore: refactor `unit-test` and `int-test` targets #6138

Job	Run time
Linter	5m 5s
Format check	50s
Unit tests (windows-latest)	2m 58s
Unit tests (macos-latest)	1m 5s
Integration tests (windows-latest)	3m 8s
Integration tests (macos-latest)	1m 25s
Build	1m 35s
E2E tests (ubuntu-latest)	4m 27s
E2E tests (macos-latest)	3m 21s
Unit tests (ubuntu-latest)	1m 17s
Integration tests (ubuntu-latest)	1m 37s
E2E tests (windows-latest)	8m 6s
	34m 54s

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