Fix rendering template images with tintColor

This fixes a regression introduced by the previous commit, where images would no longer render with the `tintColor` on release builds. We must call `setTemplate:` (using `.template` property is illegal in Objective-C++ since `template` is reserved in C++) on the newly resized image instead of the original image.

Confirmed icons look correct in the release build of Messenger Desktop.

Author: appden

Libraries/Image/RCTImageView.mm

@@ -201,10 +201,6 @@ - (void)updateWithImage:(UIImage *)image
   if (_renderingMode != image.renderingMode) {
     image = [image imageWithRenderingMode:_renderingMode];
   }
-#else // [TODO(macOS GH#774)
-  if ((_renderingMode == UIImageRenderingModeAlwaysTemplate) != [image isTemplate]) {
-    [image setTemplate:(_renderingMode == UIImageRenderingModeAlwaysTemplate)];
-  }
 #endif // ]TODO(macOS GH#774)
 
   if (_resizeMode == RCTResizeModeRepeat) {
@@ -228,6 +224,12 @@ - (void)updateWithImage:(UIImage *)image
 #endif // ]TODO(macOS GH#774)
   }
 
+#if TARGET_OS_OSX // [TODO(macOS ISS#2323203)
+  if ((_renderingMode == UIImageRenderingModeAlwaysTemplate) != [image isTemplate]) {
+    [image setTemplate:(_renderingMode == UIImageRenderingModeAlwaysTemplate)];
+  }
+#endif // ]TODO(macOS ISS#2323203)
+
   // Apply trilinear filtering to smooth out mis-sized images
   _imageView.layer.minificationFilter = kCAFilterTrilinear;
   _imageView.layer.magnificationFilter = kCAFilterTrilinear;