Make `Mask` execution strict about nullable booleans #31868

Job	Run time
Python (lint)	42s
Rust build (default features)	2m 37s
lint-toml	7s
Rust build (all-features)	2m 35s
Rust (docs)	2m 27s
validate-workflow-yaml	7s
License Check and Audit Check (bans licenses sources)	45s
C API test build	36s
Check generated source files are up to date	45s
C/C++ (lint)	9s
Rust tests (windows-x64)	7m 38s
SQL logic tests	2m 11s
Java	2m 32s
Rust build (wasm32 with default features)	54s
C++ build	1m 22s
License Check and Audit Check (advisories)	50s
Rust (lint)	2m 4s
Rust tests (linux-arm64)	4m 28s
Rust build (with tokio dispatcher)	44s
WASM integration smoke test	5m 37s
Rust (lint, no default)	2m 24s
Check build with minimal dependencies	2m 6s
Python (test)	2m 19s
	45m 59s

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