core: Allow Regular/Bold/Italic device fonts to be registered separately #14083
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When testing #13604 , I noticed that if I provide fontSources swf(s) that contain the same font in multiple styles (Regular, Bold, Italic, Bold Italic), only one of the provided fonts will actually be registered, and the others discarded - meaning that bolded text will appear unbolded or vice versa.
This PR solves that issue by registering device fonts in a FontMap (like embedded and global fonts are), instead of registering them by name alone and ignoring the style.
If that wasn't clear, here's what rendering text looks like when all four styles of a device font have been provided, before and after this change: