DDC does not depend on the stack trace mapper application being built
with unsound null safety so the unsound .dill files are unused.
Add the unsound .dill files to the `dart2js_bot` target because they
are dependencies of the `dart2js-hostasserts-linux-unsound` and
`dart2js-unit-linux-x64-release` configurations.
Update build step of `front-end-linux-release-x64` configuraton to
build the dart2js_bot target instead of relying on the unsound
dart2js .dill files through the `ddc_stable_test` target.
Change-Id: Ia29740b60f93d1d0b4a978ff5e37080e537401a7
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/403382
Reviewed-by: Sigmund Cherem <sigmund@google.com>
Commit-Queue: Nicholas Shahan <nshahan@google.com>
Nicholas Shahan
c1ce43fd83