fix(module): import defineConfig from vite

resolves #1303

Author: danielroe

src/config.ts

@@ -1,7 +1,8 @@
 import process from 'node:process'
 import type { Nuxt, NuxtConfig } from '@nuxt/schema'
 import type { UserWorkspaceConfig, InlineConfig as VitestConfig } from 'vitest/node'
-import { defineConfig } from 'vitest/config'
+// this is deliberately the vite config function so the module runs if vitest is not installed
+import { defineConfig } from 'vite'
 import type { TestProjectInlineConfiguration } from 'vitest/config'
 import { setupDotenv } from 'c12'
 import type { DotenvOptions } from 'c12'