fix: Check pthread_mutex_init/condattr_init return values in SHM-direct #723

Job	Run time
Lint and Format	44s
Container Build	1m 46s
Security Audit	29s
Minimum Supported Rust Version	1m 6s
Performance Benchmarks	0s
Build and Test (macOS-latest, stable)	2m 45s
Build and Test (ubuntu-latest, stable, quay.io/centos/centos:stream9)	4m 16s
Build and Test (ubuntu-latest, beta)	3m 39s
Build and Test (ubuntu-latest, stable)	3m 39s
Build and Test (windows-latest, stable)	7m 4s
Coverage	0s
Post PR Coverage Comment	0s
	25m 28s

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