ci: Android 10 automated testing updates

Testing is still disabled because of https://github.com/microsoft/appcenter/issues/1451

build/android-uitest-wait-systemui.sh

@@ -16,7 +16,14 @@ echo ""
 echo "[Waiting for launcher to start]"
 LAUNCHER_READY=
 while [[ -z ${LAUNCHER_READY} ]]; do
+
+    if [ $ANDROID_SIMULATOR_APILEVEL -ge 29 ];
+    then 
+    UI_FOCUS=`$ANDROID_HOME/platform-tools/adb shell dumpsys window 2>/dev/null | grep -E 'mCurrentFocus|mFocusedApp'`
+    else
     UI_FOCUS=`$ANDROID_HOME/platform-tools/adb shell dumpsys window windows 2>/dev/null | grep -i mCurrentFocus`
+    fi
+
     echo "(DEBUG) Current focus: ${UI_FOCUS}"
 
     case $UI_FOCUS in

build/ci/.azure-devops-android-tests.yml

@@ -71,6 +71,11 @@ jobs:
         UITEST_TEST_MODE_NAME: Snapshots
         UITEST_SNAPSHOTS_ONLY: true
 
+      # Android 10 testing is disabled because of https://github.com/microsoft/appcenter/issues/1451
+      # Android_10.0:
+      #   ANDROID_SIMULATOR_APILEVEL: 29
+      #   UITEST_TEST_MODE_NAME: Automated
+
   steps:
   - checkout: self
     clean: true