chore: restore default vscode build task (#2931)

frontend/.vscode/tasks.json

@@ -122,10 +122,7 @@
       "options": {
         "cwd": "${workspaceFolder}"
       },
-      "group": {
-        "kind": "build",
-        "isDefault": true
-      },
+      "group": "build",
       "windows": {
         "options": {
           "shell": {
@@ -238,4 +235,4 @@
       }
     },
   ]
-}
+}