Remove UI-test config copy - config now in dspace-ui-tests (#1359)

* Remove UI-test config copy; config now lives in dspace-ui-tests

dspace-ui-tests bundles every customer config and selects it via the NAME
env var, so this workflow no longer checks out this repo or copies the JSON.
Deletes config/config.vsb-tuo.ui.tests.json and the two now-unused steps.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

* Pass PASSWORD_ADMIN from the DSPACE_ADMIN_PASSWORD secret

The suite reads process.env.PASSWORD_ADMIN (SETTINGS.PASSWORD_ADMIN); source it from the
existing dspace-angular secret DSPACE_ADMIN_PASSWORD. EMAIL_ADMIN is defaulted in the test code.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

---------

Co-authored-by: Matus Kasak <matus.kasak@dataquest.sk>
Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Author: 3 people

.github/workflows/playwright-tests.yml

@@ -16,24 +16,16 @@ jobs:
           path: dspace-ui-tests
           token: ${{ secrets.DEPLOY_DEV5_GH_ACTION_DISPATCH }}
 
-      - name: Checkout main repository
-        uses: actions/checkout@v4
-        with:
-          path: this-repository
-
-      - name: Copy customer config to UI tests repository for merging
-        run: |
-          cp this-repository/config/config.vsb-tuo.ui.tests.json dspace-ui-tests/customer-constants/
-
       - name: test
         working-directory: dspace-ui-tests/scripts
         env:
           HOME_URL: http://dev-6.pc:8563/
           NAME: VSB-TUO
+          PASSWORD_ADMIN: ${{ secrets.DSPACE_ADMIN_PASSWORD }}
         run: |
           ./test.sh
 
       - uses: mazoea/ga-maz/end@master
         with:
           CHOWN_DIR: ./
-        if: ${{ always() }}
+        if: ${{ always() }}