docs: added tests for components in api-reference project (#14428)

* add tests (WIP)

* added test for h2

* finished adding tests

* fixes

* fixes

* fixes

www/apps/api-reference/vitest.config.mts

@@ -0,0 +1,18 @@
+import { defineConfig } from 'vitest/config'
+import react from '@vitejs/plugin-react'
+import tsconfigPaths from 'vite-tsconfig-paths'
+import { resolve } from 'path'
+
+export default defineConfig({
+  plugins: [
+    tsconfigPaths({
+      configNames: ["tsconfig.tests.json"]
+    }), 
+    react()
+  ],
+  test: {
+    environment: 'jsdom',
+    setupFiles: [resolve(__dirname, '../../vitest.setup.ts')],
+  },
+})
+