Save full state in nullable walker when visiting conditional operand#67157

jjonescz merged 4 commits intodotnet:maindotnet/roslyn:mainfrom

jjonescz:67153-NullableWalker-ConditionalOperand-ConstantBooljjonescz/roslyn:67153-NullableWalker-ConditionalOperand-ConstantBoolCopy head branch name to clipboard