Fix: ReactDOM.preloadModule crashes with repeated custom as value

[jshaofa-ui]

Summary

Fixes a crash in ReactDOM.preloadModule() when called multiple times with the same custom as value (e.g., as: 'serviceworker').

Root Cause

In ReactFizzConfigDOM.js line 6555, the code checks resumableState.moduleUnknownResources.hasOwnProperty(as) but then reads from resumableState.unknownResources[as] — which is undefined for custom as types since they're stored in moduleUnknownResources, not unknownResources.

Fix

One-word change: unknownResources → moduleUnknownResources on line 6555.

Before:

resources = resumableState.unknownResources[as];  // undefined for custom as

After:

resources = resumableState.moduleUnknownResources[as];  // correct bucket

Reproduction

function App() {
  ReactDOM.preloadModule('worker-a', {as: 'serviceworker'});
  ReactDOM.preloadModule('worker-b', {as: 'serviceworker'});
  return <div>hello</div>;
}

The second call crashes with: TypeError: Cannot read properties of undefined (reading 'hasOwnProperty')

Fixes #36440

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