Fix pagan reformation flags

Because apparently pagan religions don't fully function as heresies for some reason.

CleanSlate/events/base_on_action_events.txt

@@ -4066,10 +4066,20 @@ narrative_event = {
 	only_playable = yes
 
 	immediate = {
-		# Switch back to unreformed religion to set reformation flag
-		become_heretic = yes
-		religion_scope = { set_flag = has_been_reformed }
-		abandon_heresy = yes
+		trigger_switch = {
+			on_trigger = religion
+
+			norse_pagan_reformed = { norse_pagan = { set_flag = has_been_reformed } }
+			tengri_pagan_reformed = { tengri_pagan = { set_flag = has_been_reformed } }
+			baltic_pagan_reformed = { baltic_pagan = { set_flag = has_been_reformed } }
+			finnish_pagan_reformed = { finnish_pagan = { set_flag = has_been_reformed } }
+			aztec_pagan_reformed = { aztec_pagan = { set_flag = has_been_reformed } }
+			slavic_pagan_reformed = { slavic_pagan = { set_flag = has_been_reformed } }
+			west_african_pagan_reformed = { west_african_pagan = { set_flag = has_been_reformed } }
+			zun_pagan_reformed = { zun_pagan = { set_flag = has_been_reformed } }
+			bon_pagan_reformed = { bon_pagan = { set_flag = has_been_reformed } }
+			hellenic_pagan_reformed = { hellenic_pagan = { set_flag = has_been_reformed } }
+		}
 
 		reformation_god_names_changes_effect = yes