style: resolve biome configuration warnings and fix linting in orgfront

orgfront/biome.json

@@ -1,4 +1,3 @@
 {
-  "root": true,
   "extends": ["../common/config/biome.base.json"]
 }

orgfront/src/components/ui/basic.test.tsx

@@ -1,4 +1,4 @@
-import React from "react";
+import type React from "react";
 import { act } from "react";
 import { createRoot } from "react-dom/client";
 import { afterEach, describe, expect, it } from "vitest";