Use default world instead of provided world #1334

Job	Run time
macos-latest: clang++ Release Pthreads	16m 7s
macos-latest: clang++ Release PaRSEC	12m 27s
macos-latest: clang++ Debug Pthreads	12m 27s
macos-latest: clang++ Debug PaRSEC	12m 56s
ubuntu-24.04: /usr/bin/g++-14 Release Pthreads	25m 21s
ubuntu-24.04: /usr/bin/g++-14 Release PaRSEC	27m 19s
ubuntu-24.04: /usr/bin/g++-14 Debug Pthreads	21m 7s
ubuntu-24.04: /usr/bin/g++-14 Debug PaRSEC	24m 12s
	2h 31m 56s

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