Fix: Correct RLS policies and function security

supabase/migrations/20251006164702_9f5cf603-b3f4-4aef-935d-6afa92222514.sql

@@ -0,0 +1,15 @@
+-- Fix search_path for set_config_value function
+CREATE OR REPLACE FUNCTION public.set_config_value(
+  setting_name text,
+  setting_value text,
+  is_local boolean DEFAULT false
+)
+RETURNS void
+LANGUAGE plpgsql
+SECURITY DEFINER
+SET search_path = public
+AS $$
+BEGIN
+  PERFORM set_config(setting_name, setting_value, is_local);
+END;
+$$;