In a recent update I noticed that the editor prompt removed the "Received" text while the prompt is in the "loading" state, it is now just an empty string.

I propose it would be useful to have a custom message for the loading state similarly to the waitingMessage property in the theme.

type EditorTheme = {
    validationFailureMode: 'keep' | 'clear';
    style: {
        loadingMessage: () => string; // new property
        waitingMessage: (enterKey: string) => string;
    };
};