feat: add gap between the elements header buttons

Author: devvaannsh

src/styles/Extn-LayersPanel.less

@@ -290,7 +290,7 @@
     .layers-section-actions {
         display: flex;
         align-items: center;
-        gap: 2px;
+        gap: 4px;
         margin-left: auto;
         flex-shrink: 0;
         opacity: 0;