RFR: 8353599: TabPaneSkin: add 'menuGraphicFactory' property

[Michael Strauß]

On Wed, 16 Apr 2025 20:10:56 GMT, Andy Goryachev <angorya at openjdk.org> wrote:

> > default factory should not be a `null` value.
> 
> oh, I see. I think it makes the life easier, since there is no need to publish the pointer to the deficient `DEFAULT_FACTORY`.
> 
> This property can be qualified with "override" to make it clearer (though longer).
> 
> `menyGraphicFactoryOverrideProperty`

On the other hand, if you have a `DEFAULT_FACTORY`, you also have an explicit API element to explain the behavior of the default factory, instead of rolling the documentation into `menuGraphicFactory`.

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PR Comment: https://git.openjdk.org/jfx/pull/1773#issuecomment-2810722796