Qt CI Bot verdict is removed on commit message update

Surely the mere rephrasing of the commit message cannot possibly invalidate the CI results. Yet editing the commit message in https://codereview.qt-project.org/c/qt/qtbase/+/523727 from PS1 to PS2 deleted the +1 from the CI Bot.

If memory serves me, I believe a rebase does not reset it. That makes little sense. A rebase can very much change the outcome of the CI test (e.g. if run w/o cherry-picking).

Expected:

• a rebase may delete the result
• but a commit message update alone should not