fix(ios): restore RNFB dynamic linkage after Expo prebuilt downgrade

[russellwheatley]

• Fixes [🐛] 🔥 EAS iOS build fails in fastlane linking stage with many "duplicate symbol" errors #9202
• Related to fix(ios): link FirebaseCore into Expo app target under SPM #9211

Expo autolinking can downgrade RNFB pods to static libraries under prebuilt RNCore, causing RNFBApp and RNFBMessaging to embed duplicate FirebaseCore objects.

• Restore affected RNFB pods to dynamic frameworks before CocoaPods generates products and link inputs
• Update the Expo fixture from 57.0.11 to 57.0.14 (and expo-build-properties from 57.0.9 to 57.0.12), which resolves expo-modules-autolinking 57.0.10 and reproduces the affected graph
• Check generated framework products, linker inputs, and duplicate-symbol signatures

---

Maintainer note: Fixes internal CPRN-321

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 68.52%. Comparing base (3b198d7) to head (4bbba0b).
⚠️ Report is 16 commits behind head on main.

Additional details and impacted files

@@              Coverage Diff              @@
##               main    #9226       +/-   ##
=============================================
+ Coverage     45.48%   68.52%   +23.05%     
- Complexity        0     1915     +1915     
=============================================
  Files           237      522      +285     
  Lines         11234    38151    +26917     
  Branches       2478     5189     +2711     
=============================================
+ Hits           5109    26141    +21032     
- Misses         5339    10224     +4885     
- Partials        786     1786     +1000     

Flag	Coverage Δ
android-native	63.76% <ø> (?)
e2e-ts-android	54.00% <ø> (?)
e2e-ts-ios	53.50% <ø> (?)
e2e-ts-macos	49.66% <ø> (?)
ios-native	68.78% <ø> (?)
ios-ruby	100.00% <100.00%> (?)
jest	46.27% <ø> (+0.79%)	⬆️

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