fix type issues and oops forgot global metrics

Author: Exirel

sopel/bot.py

@@ -605,7 +605,7 @@ def rate_limit_info(
             rate_limit_type = "user"
             rate_limit = rule.user_rate_limit
             metrics = rule.get_user_metrics(nick)
-        elif is_channel and rule.is_channel_rate_limited(channel, at_time):
+        elif channel and rule.is_channel_rate_limited(channel, at_time):
             template = rule.channel_rate_template
             rate_limit_type = "channel"
             rate_limit = rule.channel_rate_limit
@@ -614,7 +614,7 @@ def rate_limit_info(
             template = rule.global_rate_template
             rate_limit_type = "global"
             rate_limit = rule.global_rate_limit
-            metrics = global_metrics
+            metrics = rule.get_global_metrics()
         else:
             return False, None