This would have caught #27106 and seems feasible to automate. The app produced by flutter create on stable should be able to include any of the flutter/plugins as a dependency in its pubspec.yaml and still compile. Right now the flutter/plugins CI is only ever testing that the example apps within each repo build, but they're custom written for each plugin so can be working when flutter create is not.

/cc @cbracken @collinjackson, this is tangentially related to the other flutter/plugins testing work.