feat(MED-86): add db fn to show medipost dispatch error for order in Medusa

supabase/migrations/20250828133240_show_medipost_dispatch_error_for_order_in_medusa.sql

@@ -0,0 +1,10 @@
+CREATE OR REPLACE FUNCTION medreport.order_has_medipost_dispatch_error(medusa_order_id text)
+RETURNS boolean AS $$
+SELECT EXISTS (
+    SELECT 1 FROM medreport.medipost_actions
+    WHERE medusa_order_id = $1
+    AND has_error = true
+);
+$$ LANGUAGE sql STABLE;
+
+grant execute on function medreport.order_has_medipost_dispatch_error(text) to service_role;