Fix scrolling back when dragging a commit

During auto-scrolling, turn off the automatic
scroll-to-make-the-selected-item-visible functionality of
PostRefreshUpdate.

pkg/gui/controllers/local_commits_controller.go

@@ -191,7 +191,7 @@ func (self *LocalCommitsController) handleCommitDrag(opts gocui.ViewMouseBinding
 
 	self.commitDrag.hasMoved = true
 	if self.updateCommitDragInsertion(opts.Y) {
-		self.c.PostRefreshUpdate(self.context())
+		self.c.PostRefreshUpdateKeepingScrollPosition(self.context())
 	}
 	originY := self.context().GetView().OriginY()
 	self.dragAutoscroller.Update(opts.Y - originY)

pkg/integration/tests/interactive_rebase/drag_to_reorder_with_autoscroll.go

@@ -27,12 +27,8 @@ var DragToReorderWithAutoscroll = NewIntegrationTest(NewIntegrationTestArgs{
 			OriginYAtLeast(3).
 			// Move the mouse back into the viewport
 			MouseMove(1, 1).
-			/* EXPECTED:
 			// This keeps the scroll as it was
 			OriginYAtLeast(3).
-			ACTUAL: */
-			// This snaps back to reveal the original commit
-			OriginY(0).
 			MouseRelease().
 			SelectedLines(
 				Contains("commit-40"),