Hide reCAPTCHA badge on the new ticket form

[binary-koan]

Noticed this visual bug when fixing #2104.

The reCAPTCHA badge overlays the submit button and looks bad on the new ticket form (it's position:fixed but anchored to the modal instead of the page due to the transform), so this hides it and adds a disclaimer according to the reCAPTCHA FAQ

Before

After

AI Disclosure

Pasted the FAQ into Sonnet 4.5 for the initial implementation; reviewed and edited by me.

[binary-koan]

@MayaRainer _a Mind taking a look at this?