chore(ci): update env var names for App Store submission

- Rename App Store Connect secrets for consistency
- Use ASC_* prefix in appstore-release workflow

Author: hanrw

.github/workflows/appstore-release.yml

@@ -265,9 +265,9 @@ jobs:
       - name: Submit for App Store Review
         if: ${{ inputs.submit_for_review }}
         env:
-          APP_STORE_CONNECT_KEY_ID: ${{ secrets.APP_STORE_CONNECT_KEY_ID }}
-          APP_STORE_CONNECT_ISSUER_ID: ${{ secrets.APP_STORE_CONNECT_ISSUER_ID }}
-          APP_STORE_CONNECT_API_KEY_P8: ${{ secrets.APP_STORE_CONNECT_API_KEY_P8 }}
+          ASC_KEY_ID: ${{ secrets.APP_STORE_CONNECT_KEY_ID }}
+          ASC_ISSUER_ID: ${{ secrets.APP_STORE_CONNECT_ISSUER_ID }}
+          ASC_PRIVATE_KEY: ${{ secrets.APP_STORE_CONNECT_API_KEY_P8 }}
         run: |
           VERSION_ID=$(asc versions list --app-id "$APP_ID" | jq -r '.data[0].id')
           asc versions set-build --version-id "$VERSION_ID" --build-id "$BUILD_ID"