Refine warning messages and test feedback

This commit refines the warning text in the 'deleteAccountDescription' in locales and associated Supabase service role warning. Additionally, the E2E test for account deletion has been updated to include a response check for a redirection status, improving the reliability of the test outcome.

packages/supabase/src/get-service-role-key.ts

@@ -10,7 +10,7 @@ export function getServiceRoleKey() {
 
   if (process.env.NODE_ENV !== 'production') {
     console.warn(
-      `[Dev Only] You are using the Supabase Service Role. Make sure it's the right call.`,
+      `[Dev Only] This is a simple warning to let you know you are using the Supabase Service Role. Make sure it's the right call.`,
     );
   }