[0.81] Fix XCode 26.4 build errors

[simarmol]

Target Branch

0.81

Link to commit or PR to be picked

react/react-native#56099

Description

Fix XCode 26.4 build errors in fmt

react/react-native#56099
#1259

[github-actions]

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1. ✅ Fixes for regressions to core APIs. Examples:
   • A core component is behaving differently between versions 0.X and 0.X-1
   • The TurboModule.getEnforcing function is throwing an unexpected assertion error.
2. ✅ Fixes to bugs in core React Native. Examples:
   • Breakpoints in React Native DevTools not working correctly in the debugger
   • Fast Refresh not working as expected
   • Metro bundler not starting properly or ignoring the configuration file
   • Buttons that are not clickable
3. ✅ Fixes to APIs used by third-party libraries and out-of-tree platforms. Examples:
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❌ Which Pick Requests we don't accept

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   • A bugfix that contains a refactoring, resulting in changes to the public API of a class
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