Fix billing records RLS

Author: lovable-dev[bot]

supabase/migrations/20250905164218_9a445b69-8627-4ab5-93b3-c614b8b08095.sql

@@ -0,0 +1,8 @@
+-- First, just drop the existing policy and create a more secure SELECT policy
+DROP POLICY IF EXISTS "Users can view their billing records" ON public.billing_records;
+
+CREATE POLICY "Users can view their own billing records"
+ON public.billing_records
+FOR SELECT
+TO authenticated
+USING (auth.uid() = user_id);