feat(auth): allow JWT IP changes by configuration (#1236)

* feat(auth): allow JWT IP changes by configuration

* fix(auth): make JWT IP change setting concurrency-safe

* test(auth): move JWT IP change setting tests out of MCP test file

cmd/dashboard/controller/jwt.go

@@ -152,7 +152,7 @@ func identityHandler() func(c *gin.Context) any {
 			return nil
 		}
 		currentIP := c.GetString(model.CtxKeyRealIPStr)
-		if sess.IP != currentIP {
+		if !singleton.Conf.JWTIPChangeAllowed() && sess.IP != currentIP {
 			c.Set(model.CtxKeyIsIPMismatch, true)
 			return nil
 		}