[Android] Unrecognized fontFamily silently falls back to the system font (no log, unlike iOS)

[mosab-nasrallah]

Description

On Android, when fontFamily doesn't match any font, ReactFontManager falls back to the system font without logging anything. iOS logs Unrecognized font family '<name>' in the same case (RCTFont.mm), so a missing or misnamed font is easy to spot on iOS but not on Android.

Steps to reproduce

1. Set fontFamily: 'FontFamilyThatDoesNotExist' on a <Text> (see reproducer)
2. Run on Android and watch logcat
3. Text renders in the system font and nothing is logged

React Native Version

0.87.1

Affected Platforms

Runtime - Android

Output of npx @react-native-community/cli info

Not environment specific: `createAssetTypeface` in ReactFontManager.kt has no log before the system font fallback (main and 0.87-stable).

Stacktrace or Logs

Android: nothing is logged.
iOS: Unrecognized font family 'FontFamilyThatDoesNotExist'

MANDATORY Reproducer

https://github.com/mosab-nasrallah/react-native/blob/repro-android-unknown-font-family/packages/rn-tester/js/examples/Playground/RNTesterPlayground.js

Screenshots and Videos

No response