Fix incorrect `... LIKE '%'` simplification #328

Job	Run time
build with wasm-pack	2m 49s
cargo check	12m 6s
cargo test (macos)	12m 52s
Check cargo fmt	43s
cargo test (macos-aarch64)	9m 29s
Verify MSRV (Min Supported Rust Version)	8m 50s
Verify Vendored Code	49s
cargo test (win64)	25m 1s
cargo test (amd64)	10m 7s
cargo test hash collisions (amd64)	16m 34s
cargo doc	4m 36s
clippy	6m 46s
cargo test datafusion-cli (amd64)	4m 4s
cargo test doc (amd64)	16m 0s
cargo examples (amd64)	14m 14s
cargo test pyarrow (amd64)	3m 9s
Run sqllogictest with Postgres runner	3m 50s
verify benchmark results (amd64)	12m 48s
check Cargo.toml formatting	2m 59s
check configs.md and ***_functions.md is up-to-date	3m 18s
	2h 51m 4s

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