[skip ci] Re-enable Android cibuildwheel tests (refs pybind#5913)

Author: rwgk

.github/workflows/tests-cibw.yml

@@ -70,11 +70,6 @@ jobs:
       if: contains(matrix.runs-on, 'macos')
       run: echo "CIBW_TEST_COMMAND=" >> "$GITHUB_ENV"
 
-    # NOTE: Android cibuildwheel tests are currently disabled.
-    # See https://github.com/pybind/pybind11/issues/5913.
-    - name: "NOTE: Android tests are disabled"
-      run: echo '::warning::Android cibuildwheel tests are disabled (CIBW_TEST_COMMAND is empty). See issue 5913.'
-
     # https://github.blog/changelog/2024-04-02-github-actions-hardware-accelerated-android-virtualization-now-available/
     - name: Enable KVM for Android emulator
       if: contains(matrix.runs-on, 'ubuntu')
@@ -88,6 +83,5 @@ jobs:
     - uses: pypa/[email protected]
       env:
         CIBW_PLATFORM: android
-        CIBW_TEST_COMMAND: ""  # Temporarily disable Android tests; emulator setup is broken (see #5913).
       with:
         package-dir: tests