[fix] overlays, custom brush example (#2806)

This PR fixes the overlays / custom brush example

### Change Type

- [x] `patch` — Bug fix
- [ ] `minor` — New feature
- [ ] `major` — Breaking change
- [ ] `dependencies` — Changes to package dependencies[^1]
- [ ] `documentation` — Changes to the documentation only[^2]
- [ ] `tests` — Changes to any test code only[^2]
- [ ] `internal` — Any other changes that don't affect the published
package[^2]
- [ ] I don't know

packages/editor/editor.css

@@ -224,13 +224,6 @@ input,
 	contain: strict;
 }
 
-.tl-fixed-layer {
-	position: absolute;
-	inset: 0px;
-	contain: strict;
-	pointer-events: none;
-}
-
 .tl-shapes {
 	position: relative;
 	z-index: var(--layer-shapes);
@@ -264,6 +257,13 @@ input,
 	transform-origin: top left;
 }
 
+.tl-fixed-layer {
+	position: absolute;
+	inset: 0px;
+	contain: strict;
+	pointer-events: none;
+}
+
 /* ------------------- Background ------------------- */
 
 .tl-background {