Fix: core internal import in CJS legacy envs (#5509)

* Fix: core internal import in CJS legacy envs

* Changelog

Author: OEvgeny

CHANGELOG.md

@@ -241,6 +241,7 @@ Notes: web developers are advised to use [`~` (tilde range)](https://github.com/
 
 - Deprecating `disabled` props and `useDisabled` hook in favor of new `uiState` props and `useUIState` hook, in PR [#5276](https://github.com/microsoft/BotFramework-WebChat/pull/5276), by [@compulim](https://github.com/compulim)
 - `useSuggestedActions()` hook is being deprecated in favor of the `useSuggestedActionsHooks().useSuggestedActions()` hook, in PR [#5489](https://github.com/microsoft/BotFramework-WebChat/pull/5489), by [@compulim](https://github.com/compulim)
+- Fixed core internal import in legacy CommonJS environments, in [5509](https://github.com/microsoft/BotFramework-WebChat/pull/5509), by [@OEvgeny](https://github.com/OEvgeny)
 
 ## [4.18.0] - 2024-07-10
 

packages/core/internal.js

@@ -0,0 +1,3 @@
+// This is required for Webpack 4 which does not support named exports.
+// eslint-disable-next-line no-undef
+module.exports = require('./dist/botframework-webchat-core.internal.js');