Use a different error message for UTDs when you weren't in the room. (#12453)

* Use different messages for UTDs sent before login

* Playwright test for historical events

* Add some tests

* initial work on pre-join UTDs

* add playwright tests and remove old pre-join UTD logic

* run i18n script

* fix type error

* use different error code in PostHog for pre-join UTD

* don't remove old pre-join UTD logic yet

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Co-authored-by: Richard van der Hoff <richard@matrix.org>

src/DecryptionFailureTracker.ts

@@ -58,6 +58,8 @@ export class DecryptionFailureTracker {
                 case DecryptionFailureCode.HISTORICAL_MESSAGE_BACKUP_UNCONFIGURED:
                 case DecryptionFailureCode.HISTORICAL_MESSAGE_WORKING_BACKUP:
                     return "HistoricalMessage";
+                case DecryptionFailureCode.HISTORICAL_MESSAGE_USER_NOT_JOINED:
+                    return "ExpectedDueToMembership";
                 default:
                     return "UnknownError";
             }