simplified SMJ state management #824

Job	Run time
cargo test (macos-aarch64)	7m 20s
build with wasm-pack	2m 39s
cargo check	10m 24s
cargo test (macos)	5m 35s
cargo test (win64)	48m 34s
Check cargo fmt	37s
Verify MSRV (Min Supported Rust Version)	7m 0s
Verify Vendored Code	49s
Run sqllogictest with Postgres runner	3m 38s
cargo test doc (amd64)	15m 49s
cargo doc	4m 7s
cargo examples (amd64)	13m 35s
cargo test pyarrow (amd64)	2m 50s
verify benchmark results (amd64)	12m 21s
check Cargo.toml formatting	3m 1s
clippy	3m 47s
check configs.md and ***_functions.md is up-to-date	3m 1s
cargo test (amd64)	10m 44s
cargo test hash collisions (amd64)	14m 43s
cargo test datafusion-cli (amd64)	3m 54s
	2h 54m 28s

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