message: Applied default font styles props are nil
  Couldn't find way to get the defaults from UIFont like did with button labels and titles, so hard-coded values
diff: if ([changedProps containsObject:@"fontFamily"] || [changedProps containsObject:@"fontWeight"]
  || [changedProps containsObject:@"fontStyle"] || [changedProps containsObject:@"fontSize"]) {
  UIFont *baseFont = !self.fontFamily ? [UIFont systemFontOfSize:UIFont.labelFontSize] : nil;
  - NSNumber *size = !self.fontSize ? @(UIFont.labelFontSize) : self.fontSize;
  - UIFont *font = [RCTFont updateFont:baseFont withFamily:self.fontFamily size:size weight:self.fontWeight style:self.fontStyle variant:nil scaleMultiplier:1];
  + NSNumber *size = !self.fontSize ? @10 : self.fontSize;
  + NSString *weight = !self.fontWeight ? @"500" : self.fontWeight;
  + UIFont *font = [RCTFont updateFont:baseFont withFamily:self.fontFamily size:size weight:weight style:self.fontStyle variant:nil scaleMultiplier:1];
  NSMutableDictionary *attributes = [NSMutableDictionary new];
  if (self.fontFamily || self.fontWeight || self.fontStyle || self.fontSize) {
  attributes[NSFontAttributeName] = font;
  