feat(ios): support condensed system font on fabric

[ismarbesic]

Summary:

This PR adds support for using the condensed system font on iOS when passing "SystemCondensed" as fontFamily. This behavior existed in the old architecture but was never ported to the new one, see RCTFont.mm as reference. Fixes #52258.

Changelog:

[IOS] [ADDED] - Add support for condensed system font when using the new react native architecture.

Test Plan:

Before:

After:

[javache]

I see isCondensedFont is used in a few more places in the legacy arch implementation (we should really look at unforking this!) - do we need to merge those too?

[ismarbesic]

I see isCondensedFont is used in a few more places in the legacy arch implementation (we should really look at unforking this!) - do we need to merge those too?

Good question :). The one I linked to above is crucial to have, to set the condensed font descriptor trait when font family equals to SystemCondensed. Regarding the other cases, I am not really convinced we need those.

This check seems to run even if the previous block was able to find a font (since didFindFont is not updated properly) - I assume it's wrong? The isCondensed variable here won't have an effect if my previous statement is valid. The last check here is the one that might make sense to port if the second if-block is supposed to run, otherwise the value would never have changed. Using Avenir Next Condensed for example works without these changes but the system one doesn't.

[ismarbesic]

Thank you @javache for the initial look at this PR. Could you let me know what the next steps are?