Fix italic font style on new arch ios

[delekta]

Asana ticket

Fixes fontFamily on iOS (new arch):

1. when given a comma-separated list of font names like "NotoSans-Bold, NotoSans-Italic". Each token is now trimmed of surrounding whitespace before lookup,
2. every resolved face is expanded to its full family so the weight/style matching loop can pick italic and weighted variants
3. and the target weight is seeded from the first resolved face when the caller didn't set one — preventing bold faces from being silently downgraded to Regular.

Before the changes, the comma-split branch only added each resolved face's exact name (updatedFontNames = [updatedFontNames arrayByAddingObject:font.fontName]) to the candidate list. As a result, no candidate ever satisfied RCTGetFontStyle(fontMatch) == fontProperties.style for italic — those faces were never in fontNames to begin with — so the matching loop produced no fontMatch and we fell back to the default font.

Summary:

Changelog:

Test Plan: