fix: typeerror in wwebjs.sendMessage

[danieldwipaska]

Description

this is to fix a typeerror on window.wwebjs.sendMessage method that intermittently happens when the app is running

Related Issue(s)

fixes #201761

Testing Summary

Test Details

just run the app and wait several hours after finishing authentication

Environment

• Machine OS: macOS 26
• Phone OS: Android 12
• Library Version: 1.34.7
• WhatsApp Web Version: 2.3000.1017054665
• Browser Type and Version: 146.0.7680.31
• Node Version: 18.19

Type of Change

• Dependency change (package changes such as removals, upgrades, or additions)
• Bug fix (non-breaking change that fixes an issue)
• New feature (non-breaking change that adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Non-code change (documentation, README, etc.)

Checklist

• My code follows the style guidelines of this project.
• All new and existing tests pass (npm test).
• Typings (e.g. index.d.ts) have been updated if necessary.
• Usage examples (e.g. example.js) / documentation have been updated if applicable.

[BenyFilho]

#201745