[MM-34240] - Cloud: "Congratulations" welcome email missing images (#17350)

* [MM-34240]-Cloud: Congratulations welcome email missing images

* Use img instead of svg

* Add fallback font Arial

* Feedback impl

* EOF

Co-authored-by: Mattermod <mattermod@users.noreply.github.com>

api4/cloud.go

@@ -408,7 +408,7 @@ func handleCWSWebhook(c *Context, w http.ResponseWriter, r *http.Request) {
 			return
 		}
 
-		if appErr := c.App.Srv().EmailService.SendCloudWelcomeEmail(user.Email, user.Locale, team.InviteId, subscription.GetWorkSpaceNameFromDNS(), subscription.DNS); appErr != nil {
+		if appErr := c.App.Srv().EmailService.SendCloudWelcomeEmail(user.Email, user.Locale, team.InviteId, subscription.GetWorkSpaceNameFromDNS(), subscription.DNS, *c.App.Config().ServiceSettings.SiteURL); appErr != nil {
 			c.Err = appErr
 			return
 		}