Replace RS4 with Client19H1 in CI (#41277)
Replace RS4 with Client19H1 in CI (#41277)


shimingsg/corefx,shimingsg/corefx,wtgodbe/corefx,ViktorHofer/corefx,shimingsg/corefx,ericstj/corefx,ericstj/corefx,ViktorHofer/corefx,wtgodbe/corefx,ericstj/corefx,ericstj/corefx,ViktorHofer/corefx,shimingsg/corefx,shimingsg/corefx,wtgodbe/corefx,wtgodbe/corefx,ericstj/corefx,wtgodbe/corefx,ViktorHofer/corefx,shimingsg/corefx,shimingsg/corefx,ViktorHofer/corefx,ViktorHofer/corefx,wtgodbe/corefx,wtgodbe/corefx,ericstj/corefx,ViktorHofer/corefx,ericstj/corefx