[Bug]: ReferenceError: Can't find variable: MessageEvent,

### Describe the bug


Thread 12: "Unhandled JS Exception: ReferenceError: Can't find variable: MessageEvent, stack:\n@5145:692\nh@2:1788\n@5144:531\nh@2:1788\n@5143:1444\nh@2:1788\n@4917:592\nh@2:1788\n@4916:531\nh@2:1788\nd@2:1179\nv@1377:15377\ninit@1377:35193\n@5921:477\n@1298:848\ny@5783:1377\nS@5775:490\n@5775:1139\nu@99:157\n@99:869\n@105:1470\nT@105:418\np@105:691\ncallReactNativeMicrotasks@105:2861\nvalue@33:2942\n@33:1033\nvalue@33:2578\nvalue@33:991\n"

### Expected behavior

How I can fix it ???

### Screenshots/Recordings

_No response_

### Steps to reproduce

I don't know how to fix

### Error messages or log output

```shell

```

### Detection stage

In production (default)

### Version

7.40.0

### Build type

None

### Device

IOS

### Operating system

iOS

### Additional context

_No response_

### Severity

_No response_

Start by reproducing the crash in an iOS production build of version 7.40.0 and use the provided stack trace to locate the bundled code that references MessageEvent. Trace which dependency or browser-facing path reaches that reference, then verify the fix by confirming the production build no longer raises the exception.

Written by the indexing model from the issue text.