macos: temporarily downgrade to Python 3.11 to fix UI issues on macOS 27.2 (#1486)

.github/workflows/package-macos.yml

@@ -34,10 +34,12 @@ jobs:
       - name: Set up Python
         uses: actions/setup-python@v7
         with:
-          python-version: 3.13.17
+          python-version: 3.11
+          check-latest: true
           cache: 'pip'
       - name: Install python dependencies
         run: |
+          python -m pip install "pip @ https://files.pythonhosted.org/packages/3f/06/3e4420302363fbb71be3c7f35ce042f54bfca330e3e66b3a2e3c4cca579f/pip-26.2.2-py3-none-any.whl#sha256=fd7f4dfa8190e014013b9f08f3e973f4e4c26ffd179a204895533a7254813a70"
           python -m pip install --upgrade pip certifi pyinstaller
           pip install -r requirements.txt
       - name: Install the Apple certificate and provisioning profile