[Referee invitation][Account activation] Account activation email for invited referees still contains incorrect information
Bug Report
Description
When an invited referee creates an account using the invitation link sent in the email (subject: SciPost: refereeing and registration invitation), they receive an activation email (subject:SciPost: Request received) with an account activation link. In that email, they are informed that "Your credentials will thereafter be verified. If you fulfil our eligibility requirements, your account will be vetted through (you will receive confirmation by email). If vetted through, you will then be able to login and use our facilities." which is incorrect. The email should actually state: "After confirming your email through the activation link, you will be able to log in to the platform immediately." This issue was meant to be solved in commit 3784b57a, but unfortunately is still present.