outer join romfile on by_hash call

Author: gantoine

backend/handler/database/roms_handler.py

@@ -1116,4 +1116,4 @@ def get_rom_by_hash(
             return None
 
         # Return the first ROM matching any of the provided hash values
-        return session.scalar(query.filter(or_(*filters)).limit(1))
+        return session.scalar(query.outerjoin(Rom.files).filter(or_(*filters)).limit(1))