Allow GT_OBJ for Arm64
Allow GT_OBJ for Arm64

GT_OBJ is used on Arm64 for struct passing, but was inadvertently flagged
as an illegal node in Lowering.
Fix #7160

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