[infra] Compute builder redness due to unapproved failures on the builder
[infra] Compute builder redness due to unapproved failures on the builder

Fixes: https://github.com/dart-lang/sdk/issues/41627
Change-Id: Ie197409520b8215047df215429c3febf3ee7000d
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/144501
Reviewed-by: Karl Klose <49bc0b76cffb0b10cd8c84f9cabc97a31ffe6343@google.com>

dart-lang/sdk,dart-lang/sdk,dart-lang/sdk,dart-lang/sdk,dart-lang/sdk,dart-lang/sdk,dart-lang/sdk,dart-lang/sdk