Fix webhook creation/filtering with invalid org (#5707)

CHANGELOG.md

@@ -19,7 +19,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - TDB
 
 ### Fixed
-- TDB
+- An invalid project/org handling in webhooks (<https://github.com/opencv/cvat/pull/5707>)
 
 ### Security
 - TDB
@@ -103,7 +103,6 @@ Tracks can be exported/imported to/from Datumaro and Sly Pointcloud formats (<ht
 - Added missing `CVAT_BASE_URL` in docker-compose.yml (<https://github.com/opencv/cvat/pull/5792>)
 - Create cloud storage button size and models pagination (<https://github.com/opencv/cvat/pull/5858>)
 
-
 ### Security
 - Fixed vulnerability with social authentication (<https://github.com/opencv/cvat/pull/5521>)