Phase 120: Complete boolean return type conversions #101

Job	Run time
Build & Test (clang-15, Release)	40s
Performance Regression Check	2m 5s
Build & Test (gcc-13, Debug)	42s
Code Quality Checks	52s
Build & Test (gcc-13, Release)	44s
Build & Test (clang-15, Debug)	29s
Sanitizer Tests (ASAN + UBSAN)	38s
Build Summary	2s
	6m 12s

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