subscription_thread_dispatcher: guard against duplicate room events #273

Job	Run time
Detect Changes	5s
License Check / License Check	4s
Link Check / Link Check	8s
Generate Docs / Generate and verify docs	34s
C++ Checks / clang-tidy	10m 56s
C++ Checks / clang-format	22s
Builds / Build (macos-arm64)	4m 10s
Builds / Build (macos-x64)	14m 6s
Tests / Code Coverage	17m 10s
Builds / Build (windows-x64)	9m 54s
Builds / Build (linux-x64)	9m 39s
Tests / Test (windows-x64)	12m 0s
Tests / Test (linux-arm64)	7m 8s
Builds / Build (linux-arm64)	7m 42s
Tests / Test (macos-arm64)	5m 13s
Tests / Test (macos-x64)	13m 52s
Tests / Test (linux-x64)	8m 10s
Docker Images	-1s
Rust Release Check	-1s
CI	5s
	2h 1m 16s

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