fix(ios) use condensed system font (#43188)

Summary:
The current implementation does not support System font variants. Currently the isCondensed variable is always returning false. This pr adds an extra check to support the 'SystemCondensed' font variant on iOS.

## Changelog:

<!-- Help reviewers and the release process by writing your own changelog entry.

Pick one each for the category and type tags:

[ANDROID|GENERAL|IOS|INTERNAL] [BREAKING|ADDED|CHANGED|DEPRECATED|REMOVED|FIXED|SECURITY] - Message

For more details, see:
https://reactnative.dev/contributing/changelogs-in-pull-requests
-->

[IOS][ADDED] - Update font to handle system condensed variant

Pull Request resolved: #43188

Test Plan:
```
<Text style={{ fontSize: 28, fontFamily: 'System' }}>System</Text>
<Text style={{ fontSize: 28, fontFamily: 'SystemCondensed' }}>SystemCondensed</Text>
<Text style={{ fontSize: 28, fontFamily: 'AmericanTypewriter-Condensed' }}>AmericanTypewriter-Condensed</Text>
<Text style={{ fontSize: 28, fontFamily: 'HelveticaNeue' }}>HelveticaNeue</Text>
<Text style={{ fontSize: 28, fontFamily: 'HelveticaNeue-CondensedBold' }}>HelveticaNeue-CondensedBold</Text>
```
![Simulator Screenshot - iPhone 15 Pro - 2024-02-26 at 17 56 40](https://github.com/facebook/react-native/assets/63480001/36daea22-2e75-4526-8b2d-f0555fbf2441)

Reviewed By: fabriziocucci

Differential Revision: D57329036

Pulled By: javache

fbshipit-source-id: b0fffde1a568cb498f907e0a007df4da3e11d586

packages/react-native/React/Views/RCTFont.mm

@@ -418,12 +418,14 @@ + (UIFont *)updateFont:(UIFont *)font
  familyName = [RCTConvert NSString:family] ?: familyName;
  isItalic = style ? [RCTConvert RCTFontStyle:style] : isItalic;
  fontWeight = weight ? [RCTConvert RCTFontWeight:weight] : fontWeight;
+ isCondensed = isCondensed || [familyName isEqualToString:@"SystemCondensed"];
 
  BOOL didFindFont = NO;
 
  // Handle system font as special case. This ensures that we preserve
  // the specific metrics of the standard system font as closely as possible.
- if ([familyName isEqual:defaultFontFamily] || [familyName isEqualToString:@"System"]) {
+ if ([familyName isEqual:defaultFontFamily] || [familyName isEqualToString:@"System"] ||
+ [familyName isEqualToString:@"SystemCondensed"]) {
  font = cachedSystemFont(fontSize, fontWeight);
  if (font) {
  didFindFont = YES;