chore: enable some define tests

Author: sapphi-red

packages/vite/src/node/__tests__/plugins/define.spec.ts

@@ -85,8 +85,7 @@ describe('definePlugin', () => {
     )
   })
 
-  // NOTE: skipped because of https://github.com/oxc-project/oxc/issues/7594
-  test.skip('preserve import.meta.env.UNKNOWN with override', async () => {
+  test('preserve import.meta.env.UNKNOWN with override', async () => {
     const transform = await createDefinePluginTransform({
       'import.meta.env.UNKNOWN': 'import.meta.env.UNKNOWN',
     })

playground/define/__tests__/define.spec.ts

@@ -1,6 +1,6 @@
 import { expect, test } from 'vitest'
 import viteConfig from '../vite.config'
-import { isBuild, page } from '~utils'
+import { page } from '~utils'
 
 const defines = viteConfig.define
 const envDefines = viteConfig.environments.client.define
@@ -26,12 +26,9 @@ test('string', async () => {
   expect(await page.textContent('.env-var')).toBe(
     JSON.parse(defines['process.env.SOMEVAR']),
   )
-  // NOTE: skipped because of https://github.com/oxc-project/oxc/issues/7598
-  if (!isBuild) {
-    expect(await page.textContent('.process-as-property')).toBe(
-      defines.__OBJ__.process.env.SOMEVAR,
-    )
-  }
+  expect(await page.textContent('.process-as-property')).toBe(
+    defines.__OBJ__.process.env.SOMEVAR,
+  )
   expect(await page.textContent('.spread-object')).toBe(
     JSON.stringify({ SOMEVAR: defines['process.env.SOMEVAR'] }),
   )