BUG: Correct incorrect advance in PCG with emulated int128 #20080
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Correct incorrect implemetation of carry in PCG64 and PCG64DXSM when advancing more than 2**64 steps closes numpy#20048
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Backport of #20049.
Correct incorrect implemetation of carry in PCG64 and PCG64DXSM
when advancing more than 2**64 steps
closes #20048