[web] track email notification sent and email link clicked (#32715)

* emit email-notification-sent event
* use UTM tags to track email link clicks
* do not include utm_id on session at registration

GitOrigin-RevId: 24091bf8923fa11b8ba5ebfc63a0cea5c0f9f40c

services/web/app/src/Features/Analytics/AnalyticsRegistrationSourceHelper.mjs

@@ -75,7 +75,7 @@ function addUserProperties(userId, session) {
     }
 
     if (session.inbound.utm) {
-      for (const utmKey of RequestHelper.UTM_KEYS) {
+      for (const utmKey of RequestHelper.REGISTRATION_UTM_KEYS) {
         if (session.inbound.utm[utmKey]) {
           AnalyticsManager.setUserPropertyForUserInBackground(
             userId,

services/web/app/src/Features/Analytics/RequestHelper.mjs

@@ -8,6 +8,7 @@ const UTM_KEYS = [
   'utm_content',
   'utm_medium',
   'utm_count',
+  'utm_id',
 ]
 
 function parseUtm(query) {
@@ -49,8 +50,11 @@ function parseReferrer(referrer, url) {
   return referrerValues
 }
 
+const REGISTRATION_UTM_KEYS = UTM_KEYS.filter(k => k !== 'utm_id')
+
 export default {
   UTM_KEYS,
+  REGISTRATION_UTM_KEYS,
   parseUtm,
   parseReferrer,
 }