Fix reading Time zone rules using Julian days (dotnet/coreclr#17635)
Fix reading Time zone rules using Julian days (dotnet/coreclr#17635)

* Fix reading Time zone rules using Julian days

* Order the condition correctly

* Start searching from month 1 and not 0

* Exclude n Julian format

* fix typo

* Adding the suggested assert

Signed-off-by: dotnet-bot-corefx-mirror <03c4cb6107ae99956a7681f2c97ff7104809a2bd@microsoft.com>

ViktorHofer/corefx,shimingsg/corefx,Jiayili1/corefx,ptoonen/corefx,mmitche/corefx,shimingsg/corefx,Jiayili1/corefx,mmitche/corefx,mmitche/corefx,mmitche/corefx,ericstj/corefx,shimingsg/corefx,Jiayili1/corefx,ericstj/corefx,mmitche/corefx,BrennanConroy/corefx,ViktorHofer/corefx,ericstj/corefx,shimingsg/corefx,ptoonen/corefx,ptoonen/corefx,mmitche/corefx,ericstj/corefx,wtgodbe/corefx,shimingsg/corefx,Jiayili1/corefx,Jiayili1/corefx,mmitche/corefx,wtgodbe/corefx,wtgodbe/corefx,wtgodbe/corefx,shimingsg/corefx,ericstj/corefx,ptoonen/corefx,ericstj/corefx,ViktorHofer/corefx,ptoonen/corefx,Jiayili1/corefx,wtgodbe/corefx,ViktorHofer/corefx,ptoonen/corefx,ptoonen/corefx,BrennanConroy/corefx,ViktorHofer/corefx,ViktorHofer/corefx,wtgodbe/corefx,shimingsg/corefx,ViktorHofer/corefx,ericstj/corefx,Jiayili1/corefx,wtgodbe/corefx,BrennanConroy/corefx