network: load gossip db early

The gossip db is loaded early when the network is started to save
time when the gui is locked and a wallet not yet loaded. Side effects
of the LNWallet to start peering when a channel db is loaded is
circumvented.

electrum/daemon.py

@@ -444,6 +444,9 @@ class Daemon(Logger):
             daemon_jobs.append(self.watchtower.run)
         if self.network:
             self.network.start(jobs=[self.fx.run])
+            # prepare lightning functionality, also load channel db early
+            self.network.maybe_init_lightning()
+            self.network.channel_db.load_data()
 
         self.taskgroup = TaskGroup()
         asyncio.run_coroutine_threadsafe(self._run(jobs=daemon_jobs), self.asyncio_loop)