Remove loading button state from hand raise button

Currently there is a loading/spinner on the hand raise lead buttons, but the submission of the lead closes the modal and the user doesn't really benefit from knowing the work is happening or finished.

We should remove it as it has no use/benefit on the UX.

video showing spinner from original implementation. Some button stylings have changed(green vs blue), but it is essentially the same - 'contact sales' button is where the spinner is.