Adding reject-client-connections doc. #11329

Job	Run time
Test Suite	15m 27s
Smoketests (spacetimedb-runner)	12m 2s
Smoketests (windows-latest)	21m 22s
Lints	2m 59s
Build and test wasm bindings	6m 58s
Check that packages are publishable	14s
Test spacetimedb-update flow (x86_64-unknown-linux-gnu, spacetimedb-runner)	1m 19s
Test spacetimedb-update flow (aarch64-unknown-linux-gnu, arm-runner)	37s
Test spacetimedb-update flow (x86_64-pc-windows-msvc, windows-latest)	3m 18s
Test spacetimedb-update flow (aarch64-apple-darwin, macos-latest)	1m 5s
	1h 5m 21s

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