feat(network): announce send chunks as an all-or-nothing batch #819

Job	Run time
postgresql migration script check	4s
android-aar build	7m 54s
linux-arm64 build + test	6m 42s
windows-x86_64 build + test	7m 48s
android-arm64-v8a build	2m 19s
android-x86_64 build + test	7m 10s
ios build	1m 36s
linux-x86_64 build + test	5m 10s
macos-x86_64 build	1m 52s
mac-catalyst build	40s
linux-musl-x86_64 build + test	2m 0s
apple-xcframework build	4m 18s
macos build + test	3m 8s
android-armeabi-v7a build	2m 24s
macos-arm64 build + test	2m 56s
linux-musl-arm64 build + test	5m 37s
ios-sim build	2m 3s
postgresql 15 build + test	1m 26s
postgresql 17 build + test	1m 22s
postgresql15-macos-arm64 build	27s
postgresql17-macos-x86_64 build	22s
postgresql17-linux-x86_64 build	27s
postgresql17-macos-arm64 build	25s
postgresql15-macos-x86_64 build	25s
postgresql17-linux-arm64 build	36s
postgresql15-linux-x86_64 build	29s
postgresql15-linux-arm64 build	36s
release	0s
docker ${{ matrix.image }} pg${{ matrix.pg_major }}	0s
	1h 10m 16s

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