[UI]: double space between words in error toast

[YauheniyaH]

DIAL chat version

0.47.0

How to reproduce

double space between words in error toast

Actual result

Expected result

reproducible for error toast when admin try to approve item with name and version which already has been approved

Confidential information

• I confirm that do not share any confidential information

[PolinaGurinovich97]

@astsiapanay Please fix the error in file server\src\main\java\com\epam\aidial\core\server\service\PublicationService.java