Sometime you need to help a coworker to update their patch.
So, you may want to visit the "Update Patch" button, that is available.
But, the wizard goes to a dead-end because it only proposes your patches.
After this change, the current Diff is always proposed, as soon as
you can View and Edit that.
So, if you visit this URI:
https://we.phorge.it/differential/diff/9876/?revisionID=25328
Now the revision 25328 is not skipped anymore.
Any follow-up change is welcome to modernize the current selector
using a AphrontFormTokenizerControl.
Closes T15538