Add proper quoting to gradle arguments

Co-authored-by: kirklandsign <107070759+kirklandsign@users.noreply.github.com>

Author: Copilot

llm/android/LlamaDemo/scripts/run-ci-tests.sh

@@ -92,11 +92,11 @@ adb logcat > /tmp/logcat.txt &
 LOGCAT_PID=$!
 
 echo "=== Starting Gradle ==="
-GRADLE_ARGS="-PskipModelDownload=true -PmodelPreset=$MODEL_PRESET"
+GRADLE_ARGS="-PskipModelDownload=true -PmodelPreset=\"$MODEL_PRESET\""
 if [ "$USE_LOCAL_AAR" = "true" ]; then
   GRADLE_ARGS="$GRADLE_ARGS -PuseLocalAar=true"
 fi
-./gradlew connectedCheck $GRADLE_ARGS
+eval ./gradlew connectedCheck "$GRADLE_ARGS"
 TEST_EXIT_CODE=$?
 
 echo "=== Model directory after Gradle ==="