ISTWCMS-7022: reset max-width for banners since some styles rely on the old value

src/patterns/01-core/props/_layout.scss

@@ -9,4 +9,7 @@
   .uw-full-width {
     --layout-max-width: 100%;
   }
+  .uw_para_image_banner {
+    --layout-max-width: 75rem;
+  }
 }