Update "become a keymember" auto confirmation emails

[brittag]

What is the problem, and what should happen instead?

The text at https://github.com/doubleunion/arooo/blob/main/app/views/member_status_mailer/new_key_member.html.haml is outdated. We should make it reflect our current process, so that it's not confusing.

Screenshots of current behavior, if any

[brittag]

More details from duplicate at #686

The current text talks about the smart key lock we no longer have, and seems to imply that the next step is to go to an orientation, while right now we send the email after someone has attended an orientation.

Here is the current text:

"""
NAME, to finalize your key membership you must attend a Key Member Orientation or a New Member Orientation.
At the orientation we will:

• Set you up with a keycode and smartlock access (smartlock access is either via a smartphone app or via a second keycode)
• Show you how to access and lock up the space
• Review the responsibilities of being a key member

If there are no key member orientations or new member orientations currently scheduled, please reply-all to this email to schedule one with the Membership Coordinators (please include a few times/dates that would work well for you!). You may optionally attend key member orientation over video chat (if you've already done a new member orientation), but in person is best so that you can see how everything works.

Wooooooo,
Double Union
@doubleunionsf
www.doubleunion.org
"""