Improve e2e tests (#8927)

* get e2e image picker working

* verify create account actually reaches onboarding

* wait for image to actually be attached before posting

* wait until login finishes before moving on

* sign out before switch accounts then wait until logged in

* disable onboarding experiments in e2e

* add testId to handle availability checkmark

* fix too long username

* update thread muting test to reflect current behaviour

* hackfix for the british english translation

* unflake the onboarding tests

* fix curate list flow

* admit defeat on the most list one

__e2e__/flows/post-report-flow.yml

@@ -3,11 +3,14 @@ appId: xyz.blueskyweb.app
 - runScript:
     file: ../setupServer.js
     env:
-        SERVER_PATH: "?users&follows&posts"
+      SERVER_PATH: "?users&follows&posts"
 - runFlow:
     file: ../setupApp.yml
 - tapOn:
     id: "e2eSignInAlice"
+- extendedWaitUntil:
+    visible:
+      id: "viewHeaderHomeFeedPrefsBtn"
 
 - tapOn:
     id: "postDropdownBtn"