Assets Linked to Collections Not Attached to Channels in Vendure v1.9.5

[julienTeam]

Describe the bug
In Vendure version 1.9.5, assets that are linked to a collection are not properly attached to a channel when added from the default channel. This issue prevents proper association between assets, collections, and channels, which may negatively impact storefront functionality and user experience.

To Reproduce

1. Create a new collection and upload some assets (e.g., images, videos) to the collection.
2. Link the assets to the collection in the default channel.
3. Attach the collection to a new or existing channel other than the default channel.
4. Observe in the shop-api that the assets are not attached to the new or existing channel, even though they are linked to the collection in the default channel.

Expected behavior
Assets linked to a collection in the default channel should be automatically attached to any channel to which the collection is added.

Environment (please complete the following information):

• @vendure/core version:1.9.5
• Nodejs version: 14.18.3
• Database (mysql/postgres etc):mysql

Additional context
Add any other context about the problem here.