I have a typical form with a button:

    <button type="submit"
            tags="prominent,login"
            class="btn btn-primary w-full"
            hx-disabled-elt="this">Sign In</button>

When I click the button, the hx-disbled-elt does not put the button in a disabled state.

I have tried to make the hx-disabled-elt a bunch of different values: this, #btn, this.form.button. None of them work.

How do I make this work?