fixup! Add ability to filter flexible attributes through the Query

Author: snejus

beets/dbcore/query.py

@@ -313,7 +313,7 @@ class NumericColumnQuery(MatchQuery[AnySQLiteType]):
     def col_name(self) -> str:
         """Cast a flexible attribute column (string) to NUMERIC affinity."""
         col_name = super().col_name
-        return col_name if self.fast else f"CAST({col_name} AS NUMERIC)"
+        return col_name if self.on_model else f"CAST({col_name} AS NUMERIC)"
 
 
 class BooleanQuery(NumericColumnQuery[bool]):