Run all unflipped incompatible flags (#1226)
Run all unflipped incompatible flags (#1226)

Previously CI examined GitHub issues to see which incompatible flags will be flipped in the next release, and then tested only those flags.
However, due to changes to the incompatible flags process the issue labels on GitHub are no longer guaranteed to be up-to-date.
As a result, we should simply run all yet-unflipped flags in the present Bazel binary when testing incompatible flags.

More context: https://github.com/bazelbuild/bazelisk/pull/248

Temporary fix for #1208
bazelbuild/continuous-integration,bazelbuild/continuous-integration,bazelbuild/continuous-integration,bazelbuild/continuous-integration,bazelbuild/continuous-integration,bazelbuild/continuous-integration,bazelbuild/continuous-integration,bazelbuild/continuous-integration