Allow closing the bot during StartingEvent

hikari/impl/gateway_bot.py

@@ -823,7 +823,9 @@ def run(
                     )
                 )
 
-                loop.run_until_complete(self.join())
+                if self._closed_event is not None:
+                    # The user might have closed the bot during startup, respect it
+                    loop.run_until_complete(self.join())
 
             finally:
                 try:
@@ -929,6 +931,10 @@ async def start(
         self._voice.start()
 
         await self._event_manager.dispatch(self._event_factory.deserialize_starting_event())
+        if self._closed_event is None:
+            # If the user requested to close the bot before startup, respect it
+            return
+
         requirements = await self._rest.fetch_gateway_bot_info()
 
         if shard_count is None:

hikari/impl/rest_bot.py

@@ -586,7 +586,10 @@ def run(
                         ssl_context=ssl_context,
                     )
                 )
-                loop.run_until_complete(self.join())
+
+                if self._close_event is not None:
+                    # The user might have closed the bot during startup, respect it
+                    loop.run_until_complete(self.join())
 
             finally:
                 try:
@@ -677,6 +680,10 @@ async def start(
             await self._rest.close()
             raise
 
+        if self._close_event is None:
+            # If the user requested to close the bot before startup, respect it
+            return
+
         await self._server.start(
             backlog=backlog,
             host=host,