chore: remove "treatCiphertextMessagesAsReal" flag

!BREAKING_CHANGE

This was generally a poor design decision on my part to add something like this -- primarily because it could increment the chat unread counter a 100 times for a single message

src/Defaults/index.ts

@@ -37,7 +37,6 @@ const BASE_CONNECTION_CONFIG: CommonSocketConfig<any> = {
 	emitOwnEvents: true,
 	defaultQueryTimeoutMs: 60_000,
 	customUploadHosts: [],
-	treatCiphertextMessagesAsReal: false,
 	retryRequestDelayMs: 250
 }