Logs the current member into the site using the given session token.
The applySessionToken() function returns a Promise that resolves when the
given session token is applied and the current member is logged into the site.
You receive a session token from the following wix-members-backend functions:
Pass the returned session token to your page code and apply it by
calling applySessionToken() to complete the process started by one of the
above functions.
Session token to apply.
This method doesn't return any custom errors, but may return standard errors. Learn more about standard Wix errors.