Dependency Dashboard is not updated if two branch automerges happen in a row (in the same job)

[rarkins]

Describe the proposed change(s).

In such cases, Renovate exits without updating the Dashboard.

It proceeds like this with no dashboard ensuring:

DEBUG: Automerged but already retried once
DEBUG: validateReconfigureBranch()
DEBUG: No reconfigure branch found
DEBUG: Removing any stale branches
DEBUG: config.repoIsOnboarded=true
DEBUG: Branch lists
{
  "branchList": [
    "renovate/attrs-24.x",
    "renovate/ipython-8.x",
    "renovate/jsonpointer-3.x",
    "renovate/numpy-2.x",
    "renovate/psutil-6.x",
    "renovate/webcolors-24.x"
  ]
  "renovateBranches": [
    "renovate/attrs-24.x",
    "renovate/jsonpointer-3.x"
  ]
}

DEBUG: remainingBranches=
DEBUG: No branches to clean up

Ideally in such edge cases it would still update the dashboard issue in the same run.