Increase modal overlay opacity from 0.3 to 0.4 for better contrast

Author: robertpiosik

packages/ui/src/components/editor/panel/modals/Modal/Modal.module.scss

@@ -18,7 +18,7 @@
     top: 0;
     left: 0;
     background-color: var(--vscode-sideBar-background);
-    opacity: 0.3;
+    opacity: 0.4;
   }
 }