fix: Remove redundant coverage report generation step

- Remove separate 'createDebugCoverageReport' command that requires emulator
- connectedAndroidTest already generates coverage via createDebugAndroidTestCoverageReport
- Fixes 'No connected devices!' error when trying to generate coverage after emulator termination
- Simplifies workflow by using coverage already generated during instrumented tests

The coverage report is automatically created at:
app/build/reports/coverage/androidTest/debug/connected/report.xml

Author: cango91

.github/workflows/ci.yml

@@ -154,9 +154,6 @@ jobs:
         disable-animations: true
         script: ./gradlew connectedAndroidTest
 
-    - name: Generate coverage report
-      run: ./gradlew createDebugCoverageReport
-
     - name: Upload coverage to Codecov
       uses: codecov/codecov-action@v4
       with: