Make TimeZoneInfo.TransitionTime fields readonly (#8529)
Make TimeZoneInfo.TransitionTime fields readonly (#8529)

TransitionTime is immutable. Help enforce this by making its fields
readonly.
cydhaselton/coreclr,James-Ko/coreclr,AlexGhiondea/coreclr,wtgodbe/coreclr,cydhaselton/coreclr,sjsinju/coreclr,sjsinju/coreclr,krk/coreclr,rartemev/coreclr,gkhanna79/coreclr,kyulee1/coreclr,alexperovich/coreclr,alexperovich/coreclr,gkhanna79/coreclr,poizan42/coreclr,James-Ko/coreclr,parjong/coreclr,krk/coreclr,hseok-oh/coreclr,qiudesong/coreclr,AlexGhiondea/coreclr,yeaicc/coreclr,russellhadley/coreclr,tijoytom/coreclr,YongseopKim/coreclr,sagood/coreclr,pgavlin/coreclr,parjong/coreclr,wateret/coreclr,ruben-ayrapetyan/coreclr,yeaicc/coreclr,krytarowski/coreclr,JonHanna/coreclr,parjong/coreclr,sjsinju/coreclr,parjong/coreclr,ruben-ayrapetyan/coreclr,YongseopKim/coreclr,botaberg/coreclr,neurospeech/coreclr,hseok-oh/coreclr,qiudesong/coreclr,ruben-ayrapetyan/coreclr,cshung/coreclr,krytarowski/coreclr,James-Ko/coreclr,krytarowski/coreclr,YongseopKim/coreclr,sagood/coreclr,krk/coreclr,gkhanna79/coreclr,gkhanna79/coreclr,botaberg/coreclr,yeaicc/coreclr,russellhadley/coreclr,botaberg/coreclr,dpodder/coreclr,James-Ko/coreclr,JosephTremoulet/coreclr,neurospeech/coreclr,kyulee1/coreclr,yizhang82/coreclr,cmckinsey/coreclr,qiudesong/coreclr,neurospeech/coreclr,James-Ko/coreclr,dpodder/coreclr,alexperovich/coreclr,tijoytom/coreclr,krytarowski/coreclr,jamesqo/coreclr,rartemev/coreclr,krytarowski/coreclr,yizhang82/coreclr,JonHanna/coreclr,cydhaselton/coreclr,wtgodbe/coreclr,ragmani/coreclr,hseok-oh/coreclr,botaberg/coreclr,dpodder/coreclr,rartemev/coreclr,YongseopKim/coreclr,AlexGhiondea/coreclr,sagood/coreclr,cmckinsey/coreclr,mmitche/coreclr,yeaicc/coreclr,parjong/coreclr,ragmani/coreclr,pgavlin/coreclr,mskvortsov/coreclr,neurospeech/coreclr,cshung/coreclr,botaberg/coreclr,cshung/coreclr,AlexGhiondea/coreclr,jamesqo/coreclr,wateret/coreclr,rartemev/coreclr,wateret/coreclr,poizan42/coreclr,mskvortsov/coreclr,mmitche/coreclr,ruben-ayrapetyan/coreclr,mmitche/coreclr,AlexGhiondea/coreclr,cmckinsey/coreclr,wateret/coreclr,cmckinsey/coreclr,pgavlin/coreclr,alexperovich/coreclr,jamesqo/coreclr,krk/coreclr,tijoytom/coreclr,sjsinju/coreclr,kyulee1/coreclr,pgavlin/coreclr,mmitche/coreclr,kyulee1/coreclr,hseok-oh/coreclr,yizhang82/coreclr,kyulee1/coreclr,mmitche/coreclr,parjong/coreclr,ruben-ayrapetyan/coreclr,yizhang82/coreclr,rartemev/coreclr,wtgodbe/coreclr,krytarowski/coreclr,YongseopKim/coreclr,dpodder/coreclr,tijoytom/coreclr,JosephTremoulet/coreclr,jamesqo/coreclr,mskvortsov/coreclr,poizan42/coreclr,JonHanna/coreclr,sagood/coreclr,qiudesong/coreclr,JonHanna/coreclr,cshung/coreclr,cydhaselton/coreclr,mskvortsov/coreclr,JosephTremoulet/coreclr,cmckinsey/coreclr,ragmani/coreclr,pgavlin/coreclr,neurospeech/coreclr,JonHanna/coreclr,poizan42/coreclr,alexperovich/coreclr,yizhang82/coreclr,jamesqo/coreclr,yeaicc/coreclr,mskvortsov/coreclr,krk/coreclr,ragmani/coreclr,ruben-ayrapetyan/coreclr,russellhadley/coreclr,yeaicc/coreclr,dpodder/coreclr,yeaicc/coreclr,mskvortsov/coreclr,cshung/coreclr,ragmani/coreclr,wtgodbe/coreclr,JonHanna/coreclr,mmitche/coreclr,sagood/coreclr,russellhadley/coreclr,ragmani/coreclr,pgavlin/coreclr,JosephTremoulet/coreclr,botaberg/coreclr,hseok-oh/coreclr,gkhanna79/coreclr,poizan42/coreclr,tijoytom/coreclr,wtgodbe/coreclr,wateret/coreclr,russellhadley/coreclr,sjsinju/coreclr,wateret/coreclr,russellhadley/coreclr,JosephTremoulet/coreclr,cmckinsey/coreclr,cydhaselton/coreclr,sagood/coreclr,krk/coreclr,JosephTremoulet/coreclr,qiudesong/coreclr,wtgodbe/coreclr,hseok-oh/coreclr,qiudesong/coreclr,YongseopKim/coreclr,rartemev/coreclr,sjsinju/coreclr,alexperovich/coreclr,poizan42/coreclr,dpodder/coreclr,yizhang82/coreclr,neurospeech/coreclr,cshung/coreclr,jamesqo/coreclr,cmckinsey/coreclr,kyulee1/coreclr,tijoytom/coreclr,AlexGhiondea/coreclr,cydhaselton/coreclr,gkhanna79/coreclr,James-Ko/coreclr