修复jdbc增加报文后，逻辑复制报错的问题

src/gausskernel/storage/replication/datasender.cpp

@@ -292,6 +292,8 @@ static void DataSndHandshake(void)
                 }
             } break;
 
+            case 'V': /* client conn driver support trace info*/
+                break;
             case 'X':
                 /* standby is closing the connection */
                 proc_exit(0);

src/gausskernel/storage/replication/walsender.cpp

@@ -639,6 +639,7 @@ static void WalSndHandshake(void)
                 /* standby is closing the connection */
                 proc_exit(0);
                 /* fall-through */
+            case 'V': /* client conn driver support trace info*/
             case 'P':
                 /* standby is closing the connection */
                 break;