core, directory: allow voice messages during member approval phase to allow audio captchas in groups that prohibit voice messages (#6624)

* rfcs: add member-support-voice rfc

* update based on the feedback

* implement RFC

* add new tests

* fix protocol tests and update plans

* restrict voice captcha exemption to host approval phase

* update agent_query_plans.txt

src/Simplex/Chat/Store/SQLite/Migrations/agent_query_plans.txt

@@ -1205,10 +1205,6 @@ Query: UPDATE ratchets SET ratchet_state = ? WHERE conn_id = ?
 Plan:
 SEARCH ratchets USING PRIMARY KEY (conn_id=?)
 
-Query: UPDATE rcv_file_chunk_replicas SET delay = ?, retries = retries + 1, updated_at = ? WHERE rcv_file_chunk_replica_id = ?
-Plan:
-SEARCH rcv_file_chunk_replicas USING INTEGER PRIMARY KEY (rowid=?)
-
 Query: UPDATE rcv_file_chunk_replicas SET received = 1, updated_at = ? WHERE rcv_file_chunk_replica_id = ?
 Plan:
 SEARCH rcv_file_chunk_replicas USING INTEGER PRIMARY KEY (rowid=?)

src/Simplex/Chat/Store/SQLite/Migrations/chat_query_plans.txt

@@ -4741,14 +4741,6 @@ Query:
 Plan:
 SEARCH protocol_servers USING INTEGER PRIMARY KEY (rowid=?)
 
-Query: 
-      UPDATE rcv_files
-      SET to_receive = 1, user_approved_relays = ?, updated_at = ?
-      WHERE file_id = ?
-    
-Plan:
-SEARCH rcv_files USING INTEGER PRIMARY KEY (rowid=?)
-
 Query: 
       UPDATE remote_controllers
       SET ctrl_device_name = ?, dh_priv_key = ?, prev_dh_priv_key = dh_priv_key