Bug 1660214 - Use CreatesDateTimeWidget() in two other places. r=smaug

I had missed these two. The NUMBER condition is dead (we early-return in
IsSingleLineTextControl above).

Differential Revision: https://phabricator.services.mozilla.com/D87721

dom/html/HTMLInputElement.cpp

@@ -2655,8 +2655,7 @@ nsresult HTMLInputElement::SetValueInternal(const nsAString& aValue,
           if (frame) {
             frame->UpdateForValueChange();
           }
-        } else if ((mType == NS_FORM_INPUT_TIME ||
-                    mType == NS_FORM_INPUT_DATE) &&
+        } else if (CreatesDateTimeWidget() &&
                    !(aFlags & TextControlState::eSetValue_BySetUserInput)) {
           if (Element* dateTimeBoxElement = GetDateTimeBoxElement()) {
             AsyncEventDispatcher* dispatcher = new AsyncEventDispatcher(
@@ -6097,8 +6096,7 @@ bool HTMLInputElement::IsHTMLFocusable(bool aWithMouse, bool* aIsFocusable,
   const bool defaultFocusable = true;
 #endif
 
-  if (mType == NS_FORM_INPUT_NUMBER || mType == NS_FORM_INPUT_TIME ||
-      mType == NS_FORM_INPUT_DATE) {
+  if (CreatesDateTimeWidget()) {
     if (aTabIndex) {
       // We only want our native anonymous child to be tabable to, not ourself.
       *aTabIndex = -1;