1415: Update the error message when user entitlement is expired or revoked

[seluianova]

Short description

Updated the error message according to the design

Side effects

no

Testing

1. Open administration --> login as a koblenz project admin --> go to settings --> create token
2. Try to import users using curl or Postman
   curl -H "Authorization: Bearer <my_token>" -F file=@import_testdata_local.csv http://0.0.0.0:8000/users/import

CSV content:

regionKey,userHash,startDate,endDate,revoked
07111,"$argon2id$v=19$m=19456,t=2,p=1$cr3lP9IMUKNz4BLfPGlAOHq1z98G5/2tTbhDIko35tY",01.01.2024,01.01.2025,true

3. Go to http://localhost:3000/ and select Koblenz
4. Go to http://localhost:3000/erstellen, create a card with a birthday 10.06.2003 and a reference number 123K
   --> check the new error message

Resolved issues:

Follow up for #1674

[ztefanie]

Thanks for adding this adjustment 🙏