[Publication]: Unpublish/publish request fails for chat with files if file is absent in file manager for user

[YauheniyaH]

EPAM AI DIAL chat version

0.12.0

How to reproduce

Steps to reproduce:

1. user create chat with file
2. user create publish request
3. admin approve publish request
4. user remove file from manage attachments
5. user go to Organizations and create unpublish request for chat01->request fails-> bug
6. user create new Publish request for cht01 -> request fails->bug

Actual result

Unpublish/publish request fails for chat with files if file is absent in file manager for user

Expected result

Need to check if files still exist in bucket according to the path
For fix it need to implement issue from core ai-dial-core#337

Confidential information

• I confirm that do not share any confidential information

[YauheniyaH]

Note: need to check that files section also is displayed inside folder on publish request for folder.

[YauheniyaH]

verified on stg 0.14.0 - issue fixed