MM-56752 (#26100)

* using token

---------

Co-authored-by: Mattermost Build <build@mattermost.com>

server/channels/web/saml.go

@@ -47,7 +47,7 @@ func loginWithSaml(c *Context, w http.ResponseWriter, r *http.Request) {
 		relayProps["team_id"] = teamId
 		relayProps["action"] = action
 		if action == model.OAuthActionEmailToSSO {
-			relayProps["email"] = r.URL.Query().Get("email")
+			relayProps["email_token"] = r.URL.Query().Get("email_token")
 		}
 	}