rust

refactor: move commit-producing APIs to `ConversationGuard` [WPB-15587] #5679

Job	Run time
check (fmt, --all -- --check)	18s
check (clippy, -- -D warnings)	3m 12s
check (clippy, -- -D warnings, --target wasm32-unknown-unknown)	1m 27s
check (check, --tests)	3m 27s
check (check, --tests, --target wasm32-unknown-unknown)	1m 19s
proteus-test	1m 14s
test	6m 0s
test-keystore-regressions	8m 8s
hack	1m 18s
proteus-wasm-test	1m 28s
wasm-core-test	2m 35s
wasm-test (keystore)	1m 0s
wasm-test (mls-provider)	51s
	32m 17s

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