remove the image loaded check for nodes without images in extract_uin…

…odes (bevyengine#7280)

## Problem

`extract_uinodes` checks if an image is loaded for nodes without images

## Solution

Move the image loading skip check so that it is only performed for nodes with a `UiImage` component.

crates/bevy_ui/src/render/mod.rs

@@ -203,22 +203,20 @@ pub fn extract_uinodes(
  if let Ok((uinode, transform, color, maybe_image, visibility, clip)) =
  uinode_query.get(*entity)
  {
- if !visibility.is_visible() {
+ // Skip invisible and completely transparent nodes
+ if !visibility.is_visible() || color.0.a() == 0.0 {
  continue;
  }
+
  let (image, flip_x, flip_y) = if let Some(image) = maybe_image {
+ // Skip loading images
+ if !images.contains(&image.texture) {
+ continue;
+ }
  (image.texture.clone_weak(), image.flip_x, image.flip_y)
  } else {
  (DEFAULT_IMAGE_HANDLE.typed().clone_weak(), false, false)
  };
- // Skip loading images
- if !images.contains(&image) {
- continue;
- }
- // Skip completely transparent nodes
- if color.0.a() == 0.0 {
- continue;
- }
 
  extracted_uinodes.uinodes.push(ExtractedUiNode {
  stack_index,