[MM-58549] Desktop login (#27732)

* desktop oauth and saml login
---------
Co-authored-by: Mattermost Build <build@mattermost.com>

server/channels/api4/user.go

@@ -1979,7 +1979,15 @@ func loginWithDesktopToken(c *Context, w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	session, err := c.App.DoLogin(c.AppContext, w, r, user, deviceId, false, false, false)
+	isOAuthUser := user.IsOAuthUser()
+	isSamlUser := user.IsSAMLUser()
+
+	if !isOAuthUser && !isSamlUser {
+		c.Err = model.NewAppError("loginWithDesktopToken", "api.user.login_with_desktop_token.not_oauth_or_saml_user.app_error", nil, "", http.StatusUnauthorized)
+		return
+	}
+
+	session, err := c.App.DoLogin(c.AppContext, w, r, user, deviceId, false, isOAuthUser, isSamlUser)
 	if err != nil {
 		c.Err = err
 		return