Return false from isRegPairType for RyuJIT.
Return false from isRegPairType for RyuJIT.

The RyuJIT backend does not use regpair types, so this method should
simply return false when that backend is in use. In the future we
should consider removing this method (and other regpair-related code).

Fixes #7089.

ramarag/coreclr,tijoytom/coreclr,Dmitry-Me/coreclr,russellhadley/coreclr,dasMulli/coreclr,dpodder/coreclr,yeaicc/coreclr,krk/coreclr,rartemev/coreclr,neurospeech/coreclr,cydhaselton/coreclr,gkhanna79/coreclr,dpodder/coreclr,JosephTremoulet/coreclr,yeaicc/coreclr,hseok-oh/coreclr,pgavlin/coreclr,qiudesong/coreclr,neurospeech/coreclr,qiudesong/coreclr,ruben-ayrapetyan/coreclr,jamesqo/coreclr,krytarowski/coreclr,rartemev/coreclr,krk/coreclr,dasMulli/coreclr,ragmani/coreclr,James-Ko/coreclr,tijoytom/coreclr,yizhang82/coreclr,mmitche/coreclr,cmckinsey/coreclr,bartdesmet/coreclr,wateret/coreclr,yeaicc/coreclr,jamesqo/coreclr,mskvortsov/coreclr,sjsinju/coreclr,gkhanna79/coreclr,ramarag/coreclr,ramarag/coreclr,sagood/coreclr,AlexGhiondea/coreclr,cmckinsey/coreclr,poizan42/coreclr,kyulee1/coreclr,cmckinsey/coreclr,JonHanna/coreclr,neurospeech/coreclr,krk/coreclr,AlexGhiondea/coreclr,wtgodbe/coreclr,rartemev/coreclr,alexperovich/coreclr,yeaicc/coreclr,wateret/coreclr,sjsinju/coreclr,JosephTremoulet/coreclr,yizhang82/coreclr,ragmani/coreclr,bartdesmet/coreclr,sagood/coreclr,parjong/coreclr,YongseopKim/coreclr,krytarowski/coreclr,mskvortsov/coreclr,jamesqo/coreclr,alexperovich/coreclr,pgavlin/coreclr,Dmitry-Me/coreclr,ragmani/coreclr,pgavlin/coreclr,pgavlin/coreclr,hseok-oh/coreclr,dpodder/coreclr,sagood/coreclr,qiudesong/coreclr,AlexGhiondea/coreclr,hseok-oh/coreclr,russellhadley/coreclr,cshung/coreclr,Dmitry-Me/coreclr,yizhang82/coreclr,ruben-ayrapetyan/coreclr,wtgodbe/coreclr,kyulee1/coreclr,hseok-oh/coreclr,dpodder/coreclr,JosephTremoulet/coreclr,jamesqo/coreclr,ragmani/coreclr,botaberg/coreclr,wtgodbe/coreclr,jamesqo/coreclr,krk/coreclr,krytarowski/coreclr,yizhang82/coreclr,mmitche/coreclr,cshung/coreclr,yeaicc/coreclr,rartemev/coreclr,sjsinju/coreclr,parjong/coreclr,cshung/coreclr,poizan42/coreclr,sagood/coreclr,James-Ko/coreclr,cmckinsey/coreclr,ramarag/coreclr,parjong/coreclr,AlexGhiondea/coreclr,James-Ko/coreclr,mmitche/coreclr,ragmani/coreclr,JonHanna/coreclr,cshung/coreclr,parjong/coreclr,cshung/coreclr,sagood/coreclr,krytarowski/coreclr,botaberg/coreclr,AlexGhiondea/coreclr,qiudesong/coreclr,hseok-oh/coreclr,parjong/coreclr,James-Ko/coreclr,pgavlin/coreclr,James-Ko/coreclr,yizhang82/coreclr,ruben-ayrapetyan/coreclr,cshung/coreclr,Dmitry-Me/coreclr,bartdesmet/coreclr,cydhaselton/coreclr,Dmitry-Me/coreclr,cydhaselton/coreclr,qiudesong/coreclr,alexperovich/coreclr,YongseopKim/coreclr,poizan42/coreclr,cydhaselton/coreclr,bartdesmet/coreclr,gkhanna79/coreclr,mmitche/coreclr,tijoytom/coreclr,alexperovich/coreclr,cmckinsey/coreclr,krytarowski/coreclr,JonHanna/coreclr,ramarag/coreclr,mskvortsov/coreclr,ruben-ayrapetyan/coreclr,krytarowski/coreclr,kyulee1/coreclr,botaberg/coreclr,poizan42/coreclr,krk/coreclr,pgavlin/coreclr,gkhanna79/coreclr,yeaicc/coreclr,ruben-ayrapetyan/coreclr,dasMulli/coreclr,wateret/coreclr,JonHanna/coreclr,rartemev/coreclr,wateret/coreclr,russellhadley/coreclr,neurospeech/coreclr,mskvortsov/coreclr,ruben-ayrapetyan/coreclr,cydhaselton/coreclr,YongseopKim/coreclr,dasMulli/coreclr,wateret/coreclr,hseok-oh/coreclr,bartdesmet/coreclr,gkhanna79/coreclr,jamesqo/coreclr,cmckinsey/coreclr,dpodder/coreclr,dasMulli/coreclr,botaberg/coreclr,ragmani/coreclr,qiudesong/coreclr,YongseopKim/coreclr,tijoytom/coreclr,bartdesmet/coreclr,James-Ko/coreclr,JonHanna/coreclr,russellhadley/coreclr,YongseopKim/coreclr,botaberg/coreclr,krk/coreclr,yeaicc/coreclr,yizhang82/coreclr,wtgodbe/coreclr,sjsinju/coreclr,Dmitry-Me/coreclr,alexperovich/coreclr,sagood/coreclr,cmckinsey/coreclr,mskvortsov/coreclr,mskvortsov/coreclr,poizan42/coreclr,dasMulli/coreclr,wtgodbe/coreclr,kyulee1/coreclr,YongseopKim/coreclr,dasMulli/coreclr,tijoytom/coreclr,mmitche/coreclr,JosephTremoulet/coreclr,cydhaselton/coreclr,wtgodbe/coreclr,russellhadley/coreclr,kyulee1/coreclr,alexperovich/coreclr,wateret/coreclr,tijoytom/coreclr,kyulee1/coreclr,ramarag/coreclr,rartemev/coreclr,JosephTremoulet/coreclr,bartdesmet/coreclr,neurospeech/coreclr,JosephTremoulet/coreclr,dpodder/coreclr,poizan42/coreclr,sjsinju/coreclr,russellhadley/coreclr,neurospeech/coreclr,ramarag/coreclr,mmitche/coreclr,gkhanna79/coreclr,Dmitry-Me/coreclr,sjsinju/coreclr,botaberg/coreclr,JonHanna/coreclr,parjong/coreclr,AlexGhiondea/coreclr