[BUG] FreeTypeFont>>veryDeepCopy

> veryDeepCopy method on FreeTypeFont instance should do nothing. Just returns self.
>
> Otherwise, FreeType font copy raise primitive failure on image saving and can corrupt image.
>
> Maybe this method should be in AbstractFont (It exists in other subclasses too, but not all).
>
>
> I open ussue 2529
>
> I found this bug after cloning morphs with text by halo button.
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