[TextControls] Call -[MDCBaseTextAreaDelegate baseTextArea:shouldChan…

…geSize:] when setting assistive label text (if needed).

Since setting the assistive label text causes the text area's size to change, we should call the -[MDCBaseTextAreaDelegate baseTextArea:shouldChangeSize:] method when it happens.

PiperOrigin-RevId: 341068027

components/TextControls/src/BaseTextAreas/MDCBaseTextArea.m

@@ -632,7 +632,6 @@ - (void)observeValueForKeyPath:(NSString *)keyPath
 
     for (NSString *assistiveLabelKeyPath in [MDCBaseTextArea assistiveLabelKVOKeyPaths]) {
       if ([assistiveLabelKeyPath isEqualToString:keyPath]) {
-        [self invalidateIntrinsicContentSize];
         [self setNeedsLayout];
         break;
       }