add push_down_order_limit #2

Job	Run time
cargo check	4m 9s
Check cargo fmt	37s
build with wasm-pack	2m 22s
cargo test (macos)	12m 5s
cargo test (macos-aarch64)	6m 21s
Verify MSRV (Min Supported Rust Version)	7m 31s
Verify Vendored Code	1m 10s
cargo test (win64)	11m 47s
cargo examples (amd64)	2m 34s
cargo doc	3m 55s
clippy	5m 19s
cargo test (amd64)	7m 5s
cargo test datafusion-cli (amd64)	3m 35s
cargo test doc (amd64)	11m 23s
Run sqllogictest with Postgres runner	3m 1s
cargo test pyarrow (amd64)	2m 33s
verify benchmark results (amd64)	7m 4s
check Cargo.toml formatting	1m 34s
check configs.md is up-to-date	2m 53s
cargo test hash collisions (amd64)	6m 25s
	1h 43m 23s

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