[Bug]: Blocked state not properly synchronized in contact details

[tmolitor-stud-tu]

If you open Contact Details from a chat view, then block the contact, the button would change from Block Contact to Unblock Contact.
If you then go back to the contact's chat view, and reopen its contactDetails, the button will be reset to Block Contact
Note: there are no changes on the blocklist when that happens. Also, this problem doesn't happen if you access ContactDetails from the contactList, block contact, close it and open it again.

This bug seems to be related to the DataLayer method -(NSDictionary* _Nullable) contactDictionaryForUsername:(NSString*) username forAccount:(NSNumber*) accountID returning a blocked dictionary item that's not related to our blocklistCache database and that column should be removed from our buddylist table.
The method -(uint8_t) isBlockedContact:(MLContact*) contact should be the only source for the blocked state and is already used by MLContact method -(void) handleBlockListRefresh:(NSNotification*) notification.