The bump is most likely not directly related to the novacaine shot itself. You might've bitten your lips while you were numb or it can be unrelated. You can check with your dentist later.
The temporary crown probably has an "open margin" where food and bacterial is getting in. Your dentist can fix that or you can just wait for the permanent crown.
I would not recommend crowning #25 in most situations. The tooth is simply too small to crown effectively without removing most of the tooth structure. This is especially true in an apicoectomy situation, as the tooth is mostly left intacted after the procedure.
