Rust

[Cherrypick] Revert congestion control change, use 3 txn per commit l… #77321

Job	Run time
license-check	1m 0s
diff	8s
test-extra (ubuntu-ghcloud)	10m 30s
windows-build (windows-ghcloud)	8m 50s
simtest	15m 53s
move-auto-formatter-ci-test	0s
test (ubuntu-ghcloud)	27m 32s
cargo-deny (bans, licenses, sources)	33s
clippy	3m 17s
move-test	0s
rustfmt	20s
test-extra	0s
test	0s
cargo-deny (advisories)	42s
cutting a new execution layer	1m 21s
	1h 10m 6s

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