Normalize schemes when comparing routing identities and include per-service
Compose domains in conflict checks. Show the conflicting service name and
align the service domains heading layout.
PHP's FILTER_VALIDATE_URL rejects underscores in the host, so domains
like https://myapp_service.example.com were rejected by the API and
never got a Let's Encrypt certificate. Add an isValidDomainUrl() helper
that validates a copy with underscores replaced by hyphens, and route
domain validation in the Applications and Services API controllers
through it.
Fixes#10597