fix: harden simulator input and service pairing #519

Job	Run time
Rust lint and unit tests	1m 41s
Packages and VS Code extension	32s
Client lint, build, and tests	42s
Build integration artifacts	3m 18s
Android emulator integration (ubuntu-latest)	5m 22s
Android emulator integration (windows-latest)	8m 29s
WebRTC stream benchmark	4m 27s
CLI simulator integration	9m 0s
JS API simulator integration	5m 41s
	39m 12s

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