Fix defensive! macro to be used in umbrella crates #17317

Job	Run time
check-dependency-rules	9s
check-fail-ci	14s
check-markdown	13s
check-readme	3m 13s
check-workspace	17s
preflight / preflight	47s
preflight / ci-versions	57s
check-rust-feature-propagation	1m 52s
test-rust-features	1m 53s
check-toml-format	1m 2s
check-umbrella	2m 18s
fmt	1m 8s
All quick checks passed	1s
	14m 4s

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