6779635eb0
To match up with analyzer behaviour, we want to only report subtype errors on the first erroneous subtype instead of every subtype down the tree. Change-Id: Ifb93ef39498e93d075a475fff8939017b563414e Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/291344 Commit-Queue: Kallen Tu <kallentu@google.com> Reviewed-by: Johnni Winther <johnniwinther@google.com>