feat: add PR_PREVIEW_DOMAIN

Author: xiaoyu2er

.github/workflows/prerelease.yml

@@ -72,7 +72,7 @@ jobs:
           VERCEL_ORG_ID: ${{ secrets.VERCEL_ORG_ID }}
           VERCEL_PROJECT_ID: ${{ secrets[matrix.secret_project_id] }}
           GITHUB_DEPLOYMENT: false
-          # PR_PREVIEW_DOMAIN: "${{ matrix.locale }}.{PR}.nextjs.im"
+          PR_PREVIEW_DOMAIN: "${{ matrix.locale }}.{PR}.nextjs.im"
 
       # - name: Deploy to Vercel (${{ matrix.locale }})
       #   if: steps.should_deploy.outputs.should_deploy == 'true'