Clear PlyStackEntry shared array on return #4506

Job	Run time
make-build (ubuntu-latest)	42s
build-and-publish (ubuntu-latest)	47s
make-build (macOS-latest)	1m 6s
long-running-tests (ubuntu-latest, LongRunning)	1m 33s
build-and-publish (windows-latest)	1m 54s
fast-tests (Debug, ubuntu-latest)	1m 31s
make-build (macOS-13)	1m 16s
long-running-tests (windows-latest, LongRunning)	2m 40s
fast-tests (Debug, windows-latest)	2m 26s
build-and-publish (macOS-latest)	51s
fast-tests (Debug, macOS-latest)	1m 11s
long-running-tests (macOS-latest, LongRunning)	1m 41s
build-and-publish (macOS-13)	1m 13s
fast-tests (Debug, macOS-13)	2m 40s
long-running-tests (macOS-13, LongRunning)	3m 26s
other-tests (ubuntu-latest, Configuration)	41s
fast-tests (Release, ubuntu-latest)	1m 33s
other-tests (windows-latest, Configuration)	2m 16s
perft-tests (ubuntu-latest, Perft)	4m 8s
fast-tests (Release, windows-latest)	2m 20s
other-tests (macOS-latest, Configuration)	52s
perft-tests (windows-latest, Perft)	5m 52s
fast-tests (Release, macOS-latest)	1m 17s
winning-at-chess (ubuntu-latest, WinningAtChess_FixedTime)	2m 42s
other-tests (macOS-13, Configuration)	1m 1s
perft-tests (macOS-latest, Perft)	4m 39s
fast-tests (Release, macOS-13)	2m 11s
	54m 29s

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