feat: show different registration intersitial lead text on new account vs. existing

public/language/en-GB/register.json

@@ -20,7 +20,8 @@
     "registration-added-to-queue": "Your registration has been added to the approval queue. You will receive an email when it is accepted by an administrator.",
     "registration-queue-average-time": "Our average time for approving memberships is %1 hours %2 minutes.",
     "registration-queue-auto-approve-time": "Your membership to this forum will be fully activated in up to %1 hours.",
-    "interstitial.intro": "We require some additional information before we can create your account.",
+    "interstitial.intro": "We'd like some additional information in order to update your account…",
+    "interstitial.intro-new": "We'd like some additional information before we can create your account…",
     "interstitial.errors-found": "We could not complete your registration:",
     "gdpr_agree_data": "I consent to the collection and processing of my personal information on this website.",
     "gdpr_agree_email": "I consent to receive digest and notification emails from this website.",

src/controllers/index.js

@@ -212,7 +212,8 @@ Controllers.registerInterstitial = async function (req, res, next) {
 
 		res.render('registerComplete', {
 			title: '[[pages:registration-complete]]',
-			sections: sections,
+			register: data.userData.register,
+			sections,
 			errors,
 		});
 	} catch (err) {