Remove borrowed types from FFI; fixed_size_list constructor accepts u32 #32838

Job	Run time
validate-workflow-yaml	6s
Java	2m 25s
Python (test)	2m 14s
Python (lint)	36s
Rust (lint, no default)	2m 27s
C++ build	1m 16s
Check build with minimal dependencies	2m 4s
Rust build (default features)	2m 32s
lint-toml	9s
Python CUDA (test)	2m 11s
Rust build (all-features)	2m 32s
WASM integration smoke test	5m 23s
License Check and Audit Check (advisories)	57s
Rust build (with tokio dispatcher)	44s
Check generated source files are up to date	42s
Rust build (wasm32 with default features)	2m 24s
License Check and Audit Check (bans licenses sources)	51s
C API test build	37s
C/C++ (lint)	8s
Mirror DuckDB to R2 / Resolve DuckDB version and check R2	6s
DuckDB libraries available in R2	3s
Mirror DuckDB to R2 / Mirror DuckDB ${{ matrix.archive }} to R2	0s
SQL logic tests	2m 7s
Rust tests (linux-arm64)	4m 29s
Rust (docs)	2m 32s
Rust (lint)	2m 10s
Rust tests (windows-x64)	8m 10s
	49m 55s

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