style: improve opened-editor padding style

Author: erha19

packages/opened-editor/src/browser/opened-editor-node.module.less

@@ -164,7 +164,7 @@
 
 .opened_editor_left_actions {
   position: absolute;
-  left: 14px;
+  left: 0;
 }
 
 .opened_editor_right_actions {

packages/opened-editor/src/browser/opened-editor-node.tsx

@@ -66,7 +66,9 @@ export const EditorTreeNode: React.FC<EditorNodeRenderedProps> = ({
   };
 
   const paddingLeft = `${
-    defaultLeftPadding + (item.depth || 0) * (leftPadding || 0) + (!EditorFileGroup.is(item) ? 16 : 0)
+    defaultLeftPadding +
+    (item.depth || 0) * (leftPadding || 0) +
+    (!EditorFileGroup.is(item) && !EditorFileGroup.isRoot(item.parent) ? 16 : 0)
   }px`;
 
   const editorNodeStyle = {