Fix the main view display after reverting a commit (#5138)

After reverting a commit, the main view would show the diff of a commit
that is not the selected one.

pkg/gui/controllers/local_commits_controller.go

@@ -869,7 +869,7 @@ func (self *LocalCommitsController) revert(commits []*models.Commit, start, end
 					return err
 				}
 				self.context().MoveSelection(len(commits))
-				self.context().FocusLine()
+				self.context().HandleFocus(types.OnFocusOpts{})
 
 				if mustStash {
 					if err := self.c.Git().Stash.Pop(0); err != nil {

pkg/integration/tests/commit/revert.go

@@ -32,6 +32,9 @@ var Revert = NewIntegrationTest(NewIntegrationTestArgs{
 				Contains("Revert \"first commit\""),
 				Contains("first commit").IsSelected(),
 			).
+			Tap(func() {
+				t.Views().Main().Content(Contains("+myfile content"))
+			}).
 			SelectPreviousItem()
 
 		t.Views().Main().Content(Contains("-myfile content"))