Handle case-sensitive identifier when decorrelating predicate subquery #32163

Job	Run time
cargo check	6m 13s
build with wasm-pack	2m 42s
Check cargo fmt	40s
cargo test (macos)	11m 32s
cargo test (macos-aarch64)	9m 54s
Verify Vendored Code	1m 0s
cargo test (win64)	49m 8s
Verify MSRV (Min Supported Rust Version)	6m 52s
cargo test datafusion-cli (amd64)	4m 5s
cargo examples (amd64)	13m 56s
cargo doc	4m 5s
cargo test (amd64)	9m 53s
cargo test doc (amd64)	14m 51s
Run sqllogictest with Postgres runner	3m 37s
cargo test pyarrow (amd64)	3m 5s
verify benchmark results (amd64)	17m 13s
check Cargo.toml formatting	2m 59s
clippy	5m 35s
check configs.md is up-to-date	2m 45s
cargo test hash collisions (amd64)	15m 5s
	3h 5m 10s

Provide feedback