[Filter] Make name filtering behavior consistent (#2794)

- Uses the updated filter check
  - This is also a performance gain on large servers with filter names
  enabled.

redbot/cogs/filter/filter.py

@@ -448,9 +448,8 @@ class Filter(commands.Cog):
         if not await self.settings.guild(member.guild).filter_names():
             return
 
-        word_list = await self.settings.guild(member.guild).filter()
-        for w in word_list:
-            if w in member.display_name.lower():
+        if await self.filter_hits(member.display_name, member.guild):
+
             name_to_use = await self.settings.guild(member.guild).filter_default_name()
             reason = _("Filtered nickname") if member.nick else _("Filtered name")
             try: