avoid issue with not having before_invoke called (Cog-Creators#4129)

Author: mikeshardmind

redbot/core/commands/commands.py

@@ -809,7 +809,9 @@ async def invoke(self, ctx: "Context"):
             if self.autohelp and not self.invoke_without_command:
                 if not await self.can_run(ctx, change_permission_state=True):
                     raise CheckFailure()
-                await ctx.send_help()
+                # This ordering prevents sending help before checking `before_invoke` hooks
+                await super().invoke(ctx)
+                return await ctx.send_help()
         elif self.invoke_without_command:
             # So invoke_without_command when a subcommand of this group is invoked
             # will skip the the invokation of *this* command. However, because of