fix: fix delete perms user folders

backend/migrations/20240416175148_tighten_delete_perms2.down.sql

@@ -0,0 +1 @@
+-- Add down migration script here

backend/migrations/20240416175148_tighten_delete_perms2.up.sql

@@ -0,0 +1,22 @@
+
+DO
+$do$
+  DECLARE
+    i text;
+    arr text[] := array['resource', 'script', 'variable', 'schedule', 'flow', 'app', 'raw_app'];
+  BEGIN
+  FOREACH i IN ARRAY arr
+  LOOP
+    EXECUTE FORMAT(
+      $$
+        DROP POLICY IF EXISTS see_folder_extra_perms_user_delete ON %1$I;
+
+        CREATE POLICY see_folder_extra_perms_user_delete ON %1$I FOR DELETE TO windmill_user
+        USING (SPLIT_PART(%1$I.path, '/', 1) = 'f' AND SPLIT_PART(%1$I.path, '/', 2) = any(regexp_split_to_array(current_setting('session.folders_write'), ',')::text[]));
+
+      $$,
+      i
+    );
+  END LOOP;
+  END
+$do$;-- Add up migration script here