More robust support for props change

[jamesplease]

When a prop changes that cannot be changed, a warning should be logged.

More props should support being changed. Right now, only disabled can be changed.

The docs should list which props can be changed.

Props that cannot change:

• nodeType
• focusId
• orientation
• wrapping

But maybe it should just be limited to nodeType and focusId

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useIsFocused should also warn if the focusId is changed.