test: harden webrtc integration boot #449

Job	Run time
Rust lint and unit tests	57s
Packages and VS Code extension	29s
Build integration artifacts	2m 1s
Client lint, build, and tests	34s
Android emulator integration	6m 35s
CLI simulator integration	16m 25s
JS API simulator integration	5m 50s
WebRTC stream benchmark	4m 13s
	37m 4s

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