Fix Maestro tests again (#6167)

* Increase the timeout for asserting 'Be in your element' is visible

* Disable the chrome onboarding flow. This simplifies the code a lot and helps avoid corner cases.

* More delays with timeout!

* Add more info to the summary, specially when the tests fail, so we can quickly check what failed.

* Make sure Maestro tests can't run in parallel, but APK builds can

.maestro/tests/assertions/assertSessionVerificationDisplayed.yaml

@@ -2,4 +2,4 @@ appId: ${MAESTRO_APP_ID}
 ---
 - extendedWaitUntil:
     visible: "Confirm your identity"
-    timeout: 20000
+    timeout: 60000