Fix intermittent CI test failure in `joins.slt` #25795

Job	Run time
build with wasm-pack	2m 18s
cargo test (macos)	31m 0s
Check cargo fmt	45s
cargo check	5m 7s
cargo test (macos-aarch64)	8m 49s
Verify MSRV (Min Supported Rust Version)	6m 48s
Verify Vendored Code	54s
cargo test (win64)	41m 9s
Run sqllogictest with Postgres runner	3m 16s
verify benchmark results (amd64)	10m 11s
circular dependency check	2m 32s
clippy	4m 30s
cargo doc	3m 32s
cargo test (amd64)	9m 7s
cargo test doc (amd64)	11m 5s
cargo test datafusion-cli (amd64)	3m 37s
cargo examples (amd64)	10m 41s
cargo test pyarrow (amd64)	2m 29s
check Cargo.toml formatting	2m 57s
check configs.md is up-to-date	2m 24s
cargo test hash collisions (amd64)	8m 26s
	2h 51m 37s

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