[anodized-core] improve: ensure that a condition returns `bool` #713

Job	Run time
Check formatting	7s
Lint and test anodized with cfg ``	1m 0s
Lint and smoke-test fuzz targets	1m 37s
Lint and test anodized-core	17s
Lint and test anodized-logic	19s
Lint and test anodized-fmt	26s
Lint and test anodized with cfg `--config 'build.rustflags=["--cfg","anodized_panic"]'`	33s
Lint and test anodized with cfg `--config 'build.rustflags=["--cfg","anodized_discard_specs"]'`	29s
Lint test-util	22s
Lint and test anodized with cfg `--config 'build.rustflags=["--cfg","anodized_print"]'`	36s
	5m 46s

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