Update test cases and improve account actioning

This commit refactors Supabase test cases to reflect the updated account actioning mechanism. The "makerkit.get_user_id" function calls were replaced with the new "tests.get_supabase_uid" function, aligning with the testing structure update. It also introduces new policies which further refine user role actions with more precise checks, replacing the old 'delete' policy with the more comprehensive 'can_action_account_member' function. New test cases for updating memberships and deleting memberships have also been added.

apps/web/supabase/tests/database/00000-makerkit-helpers.sql

@@ -15,6 +15,8 @@ create or replace function makerkit.set_identifier(
   user_email text
 )
   returns text
+  security definer
+  set search_path = auth, pg_temp
   as $$
 begin
  update auth.users set raw_user_meta_data = jsonb_build_object('test_identifier', identifier)
@@ -65,25 +67,6 @@ end;
 
 $$ language PLPGSQL;
 
-create or replace function makerkit.get_user_id(
-  user_email text
-)
-  returns uuid
-  as $$
-begin
-
-    return
-      (select
-         primary_owner_user_id
-       from
-         accounts
-       where
-         email = user_email);
-
-end;
-
-$$ language PLPGSQL;
-
 begin;
 
 select plan(1);