Exercises G22

Description :
When clicking on the ''Cancel'' button while creating a new email, the ''Your email is sent'' message is displayed and the email is saved in the sent box

Steps to reproduce:
1. Log in as a user
2. Click on ''Create new email'' button
3. Fill in the recipient, subject and body input
4. Attach any file
5. Click on the ''Cancel'' button

Actual result:

The ''Cancel'' button sends the email, the ''Your email is sent'' message is displayed and the email is displayed in the sent emails box

Expected result:

The ''Cancel'' button should close the window with the email and the email should not be saved in the sent box