CI: run unittests after build

Author: swt2c

.github/workflows/ci-build.yml

@@ -211,6 +211,11 @@ jobs:
           python -c "import wx; print(wx); print(wx.version()); print(wx.PlatformInfo)"
           pip uninstall --yes wxPython
 
+      - name: Run unittests
+        run: |
+          mv wx _wx
+          python build.py test
+
       - name: Save wheel as job artifact
         uses: actions/upload-artifact@v4
         # Just Windows and MacOS for now, all we care about for Linux at this