Update copy on first screen for first-time FV flow

[decentralauren]

Update the copy on the first-time FV flow. This should only be shown to people going through FV for the first time. Others should be shown the Re-Verification modal.

Text to use should be:

"You’re almost there! To claim G$, you need to be a unique human and prove it with your camera.

Your image is only used to ensure you’re you and prevent duplicate accounts.

Learn More"

Learn more link: https://docs.gooddollar.org/about-the-protocol/sybil-resistance