Draft: Add Supports to read/write latest values in MethodButton and Property

[akeit0]

There are some issues caused by the method of retaining the value of a field/property at the time VisualElement is created. Therefore, I have created this draft that will keep updating the value that the Element has with the correct value. There are probably some bugs, but they are difficult to deal with immediately, so I put them in the PR for now.