Add more StringView comparison test coverage #28119

Job	Run time
cargo check	3m 51s
build with wasm-pack	2m 41s
cargo test (macos)	23m 46s
cargo test (macos-aarch64)	24m 6s
cargo test (win64)	33m 30s
Check cargo fmt	1m 20s
Verify MSRV (Min Supported Rust Version)	7m 17s
Verify Vendored Code	1m 25s
cargo test datafusion-cli (amd64)	4m 2s
cargo doc	4m 31s
cargo test doc (amd64)	12m 44s
cargo test (amd64)	9m 42s
clippy	5m 29s
cargo examples (amd64)	12m 1s
Run sqllogictest with Postgres runner	4m 9s
cargo test pyarrow (amd64)	2m 56s
verify benchmark results (amd64)	11m 31s
check Cargo.toml formatting	3m 18s
check configs.md is up-to-date	2m 48s
cargo test hash collisions (amd64)	9m 4s
	3h 0m 11s

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