Agent card not retrieved from `/.well-known/agent-card.json`

When configuring an agent, the UI  makes calls to `/.well-known/agent.json` instead of `/.well-known/agent-card.json` (as per [A2A protocol spec](https://a2a-protocol.org/latest/specification/#8-agent-discovery-the-agent-card)).

Is there a particular reason for this deviation?