Remove usage of srand() and rand() functions #698

Job	Run time
mmg-debug / ci (ubuntu-24.04, off, off, off, off, int32_t)	1h 11m 12s
mmg-debug / ci (ubuntu-24.04, on, off, on, off, int32_t)	1h 21m 47s
mmg-debug / ci (ubuntu-24.04, on, off, off, off, int32_t)	1h 35m 45s
mmg-debug / ci (macos-14, on, off, on, off, int32_t)	29m 37s
mmg-debug / ci (macos-14, off, off, off, off, int32_t)	26m 27s
mmg-debug / ci (macos-14, off, off, on, off, int32_t)	25m 44s
mmg-debug / ci (macos-14, on, off, off, off, int32_t)	42m 22s
mmg-debug / ci (ubuntu-24.04, off, off, off, on, int32_t)	39m 53s
mmg-debug / ci (ubuntu-24.04, off, off, on, off, int32_t)	1h 3m 11s
mmg-debug / ci (macos-14, off, off, off, on, int32_t)	5m 47s
mmg-debug / ci (macos-14, on, on, on, on, int64_t)	6m 40s
mmg-debug / ci (ubuntu-24.04, off, on, on, off, int32_t)	1h 4m 38s
mmg-debug / ci (ubuntu-24.04, on, on, on, on, int64_t)	39m 54s
mmg-debug / ci (windows-2022, off, off, off, off, int32_t)	56m 4s
mmg-debug / ci (macos-latest, off, off, off, off, int64_t)	3m 33s
mmg-debug / ci (ubuntu-24.04, off, off, on, on, int64_t)	1h 46m 13s
mmg-debug / ci (windows-2022, on, on, off, off, int64_t)	4m 40s
mmg-debug / ci (ubuntu-24.04, off, off, off, off, int64_t)	2m 9s
mmg-debug / ci (windows-2022, on, off, off, off, int32_t)	55m 44s
mmg-debug / ci (windows-2022, off, off, off, off, int64_t)	4m 29s
mmg-debug / ci (macos-latest, off, on, on, off, int32_t)	22m 34s
mmg-debug / ci (windows-2022, off, on, off, off, int32_t)	52m 45s
mmg-debug / upload_coverage	2m 22s
	15h 3m 30s

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