Add support for a “Not You?” link on the incoming Device linking flow

[bguyza]

Add support for a “Not You?” link on the incoming Device linking flow

Description

Desired workflow

Add a link such as “Not You?” to the incoming device linking flow for a user to
decide they wish to logout of the current session and instead be presented with
the interstitial page where they may choose to “Login to an existing account” or
“Register as a new user”.

When this flow is taken, the user should need to restart the device linking flow.

Documentation tasks

BG

• Review theming variables and template description for accuracy and see if anything needs to be added.
  • https://fusionauth.io/docs/v1/tech/themes/template-variables/

Community guidelines

All issues filed in this repository must abide by the FusionAuth community guidelines.