fix(app): support arbitrary web storage keys

[OskarEichler]

What this fixes

• Prevents web event names such as hasOwnProperty from replacing the listener map method and crashing subsequent listener operations.
• Preserves event and preference keys such as __proto__ instead of silently losing them through JavaScript prototype behavior.
• Stops eventsGetListeners() callers from mutating the internal listener registry.

These names are valid strings at the bridge boundary and native maps already support them.

Implementation

The web shim now stores string-keyed data in null-prototype dictionaries, performs explicit own-property checks, and returns detached null-prototype snapshots.

Verification

Exact baseline regressions failed with a TypeError and a lost preference value. All permanent focused cases now pass. Complete repository gates also pass:

• yarn lerna:prepare
• yarn tests:jest --runInBand — 103 suites, 1,482 tests, 31 snapshots
• yarn tsc:compile
• yarn tsc:compile:consumer
• yarn lint:deps
• yarn reference:api
• yarn compare:types
• focused ESLint
• git diff --check

Compatibility

No public API/type or breaking change. Ordinary event and preference keys retain their existing behavior.

[mikehardy]

Hey @OskarEichler 👋

Thanks for the PR - this looks like a real problem to me. I ran local Jest/unit plus the android/ios/macos e2e suite against it here and it came out clean. Pending CI, then I'll merge.

Cheers

[codecov]

Codecov Report

❌ Patch coverage is 85.71429% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 69.05%. Comparing base (9f27842) to head (44a3dfe).
⚠️ Report is 3 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff              @@
##               main    #9265      +/-   ##
============================================
+ Coverage     68.60%   69.05%   +0.45%     
- Complexity     2096     2097       +1     
============================================
  Files           403      443      +40     
  Lines         22710    25522    +2812     
  Branches       4097     4256     +159     
============================================
+ Hits          15579    17622    +2043     
- Misses         5725     6525     +800     
+ Partials       1406     1375      -31     

Flag	Coverage Δ
android-native	65.07% <ø> (+0.01%)	⬆️
e2e-ts-android	54.15% <ø> (+0.06%)	⬆️
e2e-ts-ios	53.62% <ø> (?)
e2e-ts-macos	49.88% <57.15%> (?)
ios-ruby	100.00% <ø> (?)
jest	47.37% <57.15%> (+0.04%)	⬆️

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