Change Details

In the case of trying to land something that already landed, we shouldn't waste time running smoke tests on an empty patch. `arc land` will still bail, so this isn't a bug fix, however when a patch queue is put together, we don't want to accidentally wait for re-runs. Depends on D5801

In the case of trying to land something that already landed, we shouldn't waste time running smoke tests on an empty patch. `arc land` will still bail, so this isn't a bug fix, however we don't want to accidentally wait for re-runs while other changes are in the land queue. This also avoids smoke testing when no changes were made in the automated commits pipeline. Depends on D5801

In the case of trying to land something that already landed, we shouldn't waste time running smoke tests on an empty patch. `arc land` will still bail, so this isn't a bug fix, however when a patch queue is put together,e don't want to accidentally wait for re-runs while other changes are in the land queue. we don't want to accidentally wait for re-runsThis also avoids smoke testing when no changes were made in the automated commits pipeline. Depends on D5801