[BUG] when changing GENERIC_NAME to other then the default value (generic) is being ignored for services that uses traefik middlewares #353

Describe the bug
traefik setup.

services:
  tinyauth:
    image: ghcr.io/steveiliop56/tinyauth:v3
    environment:
      - APP_URL=https://auth0.example.com
      - GENERIC_NAME=MyGenericName #default:. generic
    deploy:
      labels:
        # defining the labels for other services:
        - "traefik.http.middlewares.tinyauth-auth0-secure.forwardauth.address=http://tinyauth:3000/api/auth/traefik"
        - "traefik.http.middlewares.tinyauth-auth0-secure.forwardauth.authResponseHeaders=remote-user, authorization"
        - "traefik.http.middlewares.tinyauth-auth0-secure.forwardauth.trustForwardHeader=true"

i can call the tinyauth just fine and authenticate with my OIDC endpoint (OpenText Advanced Authetication).

now i add the middleware to another service

services:
  homer:
    deploy:
      labels:
        - "tinyauth.domain=swarm0.example.com"

if i call now swarm0.example.com i get presented with the tinyauth webui -> press the now called "MyGenericName" button and a redirect is shown in the url bar which has a callback to auth0.example.com... callback...generic in it that is not working (should be MyGenericName)

the redirect to MyGenericName works with the tinyauth WebUI but not with the other service that uses a middleware via label.

if i comment GENERIC_NAME (and adapt the OIDC provider setting to generic) then both work