Description

Error description should be descriptive

Steps to Reproduce

1. Create a CC enabled app
2. Create few sub orgs
3. Share the app only to one sub org and enable the enhanced organization login for the application from the same tab
4. Try token retrieval from direct sub org using a sub org id which doesn't have the shared app```
   curl --location 'https://localhost:9443/t/carbon.super/o//oauth2/token'
   --header 'Content-Type: application/x-www-form-urlencoded'
   --header 'Authorization: Basic '
   --data-urlencode 'grant_type=client_credentials'
   --data-urlencode 'scope=internal_oauth2_introspect internal_org_user_mgt_create internal_org_user_mgt_delete internal_org_user_mgt_list internal_org_user_mgt_update internal_org_user_mgt_view read write'

5. error_description of the response should be descriptive 

### Version

IS-7.3.0-beta-SNAPSHOT

### Environment Details (with versions)

_No response_

### Developer Checklist

- [ ] [Behavioural Change] Does this change introduce a behavioral change to the product?
- [ ]  ↳ Approved by team lead
- [ ]  ↳ Label `impact/behavioral-change` added
- [ ] [Migration Impact] Does this change have a migration impact?
- [ ]  ↳ Migration label added (e.g., `7.2.0-migration`)
- [ ]  ↳ Migration issues created and linked
- [ ] [New Configuration] Does this change introduce a new configuration?
- [ ]  ↳ Label `config` added
- [ ]  ↳ Configuration is properly documented