Duplicate shorter domain in both autogen and custom ingress

[xantrix]

Describe the bug

If the custom domain exceeds 63 characters, a shorter version is added to both autogenerated and custom ingresses.
But having the same host in two ingresses on the same namespace can lead to unpredictable behavior.
See

build-deploy-tool/internal/templating/ingress/templates_ingress.go

Line 235 in 367f68d

// autogenerated domains that are too long break when creating the acme challenge k8s resource

To Reproduce

Set something like this .lagoon.yml 
# .lagoon.yml
 environments:
    master:
       routes:
        - nginx:
            - a-domain-name-that-exceeds-the-limit-of-six-three-characters.domain.com:
                hsts: max-age=31536000
                insecure: Redirect
                tls-acme: 'false'

# autogenerated-ingress yaml output snippet
spec:
  ingressClassName: nginx
  rules:
  - host: nginx-a-domain-name-that-exceeds-the-limit-of-six-three-characters.domain.com
    http:
      paths:
      - backend:
          service:
            name: nginx
            port:
              name: http
        path: /
        pathType: Prefix
  tls:
  - hosts:
    - nginx-hdjshhs-7rqtwtp5.domain.com
    - nginx-a-domain-name-that-exceeds-the-limit-of-six-three-characters.domain.com
    secretName: nginx-tls

# custom-ingress yaml output snippet
spec:
  ingressClassName: nginx
  rules:
  - host: a-domain-name-that-exceeds-the-limit-of-six-three-characters.domain.com
    http:
      paths:
      - backend:
          service:
            name: nginx
            port:
              name: http
        path: /
        pathType: Prefix
  tls:
  - hosts:
    - nginx-hdjshhs-7rqtwtp5.domain.com
    - a-domain-name-that-exceeds-the-limit-of-six-three-characters.domain.com