IPv6 bypass limit warning

[Parryword]

Steps to reproduce:

1. Install project with git clone <url>
2. Install dependencies with npm install
3. Run project with npm run start:dev
4. The following warning will appear ValidationError: Custom keyGenerator appears to use request IP without calling the ipKeyGenerator helper function for IPv6 addresses. This could allow IPv6 users to bypass limits. See https://express-rate-limit.github.io/ERR_ERL_KEY_GEN_IPV6/ for more information.

Expected behavior: No warning should appear.

Tested on macOS Sequoia 15.5 & node v24.5.0