Bug 1679460 - Call Get/SetSelectionRange even when cached r=masayuki

No need to special case here as both already use cached selection. This makes it consistent with SetSelectionStart etc.

Differential Revision: https://phabricator.services.mozilla.com/D98185

dom/html/TextControlState.cpp

@@ -2212,11 +2212,6 @@ void TextControlState::SetSelectionDirection(const nsAString& aDirection,
   nsITextControlFrame::SelectionDirection dir =
       DirectionStringToSelectionDirection(aDirection);
 
-  if (IsSelectionCached()) {
-    GetSelectionProperties().SetDirection(dir);
-    return;
-  }
-
   uint32_t start, end;
   GetSelectionRange(&start, &end, aRv);
   if (aRv.Failed()) {