fix: reap managed web browser orphans #3947

Job	Run time
Typecheck	17s
iOS Runner Swift Compatibility	5s
Fallow Code Quality	25s
Coverage	2m 9s
Web Platform Smoke	34s
Integration Tests	41s
Packaged CLI Node 22.12	23s
Layering Guard	11s
Lint & Format	19s
Swift Runner Unit Compile	1m 31s
No test-only DI seams	5s
	6m 40s

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