fix: missing one-of constraint of top-level when conditions

[guicassolato]

Add missing top-level when conditions one-of constraints. Should have been in #427.

Verification steps

① Setup:

make local-setup FF=1

② Create an AuthConfig otherwise invalid

kubectl apply -f -<<EOF
apiVersion: authorino.kuadrant.io/v1beta2
kind: AuthConfig
metadata:
  name: toystore
spec:
  hosts:
  - api.toystore.com
  when:
  - any:
    - any:
      - all:
        - operator: eq
          selector: context.request.http.method
          value: GET
        - operator: matches
          selector: context.request.http.path.@extract:{"sep":"?"}
          value: /cars.*
      - all:
        - operator: eq
          selector: context.request.http.method
          value: GET
        - operator: matches
          selector: context.request.http.path.@extract:{"sep":"?"}
          value: /dolls.*
    - any:
      - all:
        - operator: matches
          selector: context.request.http.path.@extract:{"sep":"?"}
          value: /admin.*
EOF

③ Verify the AuthConfig is ready:

kubectl get authconfig/toystore
# NAME       READY   HOSTS
# toystore   true    1/1