Set projection before configuring the source #39321

Job	Run time
linux build test	5m 0s
build with wasm-pack	3m 35s
Check License Header	2m 19s
cargo test (macos-aarch64)	11m 1s
Check cargo fmt	37s
Verify MSRV (Min Supported Rust Version)	8m 19s
Verify Vendored Code	54s
cargo check datafusion	5m 20s
cargo check functions	2m 22s
cargo test (amd64)	17m 3s
cargo check no default features	8m 24s
cargo doc	3m 57s
cargo test doc (amd64)	18m 1s
cargo examples (amd64)	17m 14s
Run sqllogictest with Postgres runner	6m 32s
cargo test pyarrow (amd64)	4m 25s
verify benchmark results (amd64)	9m 43s
check Cargo.toml formatting	3m 49s
clippy	6m 23s
check configs.md and ***_functions.md is up-to-date	4m 48s
	2h 19m 46s

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