Improve AggregationFuzzer error reporting #33260

Job	Run time
cargo test (win64)	1h 2m 50s
build with wasm-pack	2m 43s
cargo check	11m 50s
Check cargo fmt	42s
cargo test (macos)	13m 11s
cargo test (macos-aarch64)	11m 56s
Verify MSRV (Min Supported Rust Version)	8m 20s
Verify Vendored Code	1m 0s
cargo examples (amd64)	14m 17s
cargo test datafusion-cli (amd64)	4m 5s
cargo doc	4m 57s
cargo test (amd64)	11m 8s
cargo test doc (amd64)	15m 30s
verify benchmark results (amd64)	13m 13s
check Cargo.toml formatting	3m 8s
clippy	5m 48s
check configs.md and ***_functions.md is up-to-date	3m 7s
cargo test hash collisions (amd64)	17m 41s
Run sqllogictest with Postgres runner	3m 40s
cargo test pyarrow (amd64)	2m 58s
	3h 32m 4s

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