Rename buttons in 'Cancel edit' menu

When clicking off the message while editing a message, a popup appears, asking ‘Are you sure you want to cancel your edits?’. The buttons on it are ‘Cancel’ and ‘Confirm’, which is somewhat confusing. It would be clearer to rename them to ‘No’ and ‘Yes’, or ‘No’ and ‘Confirm’.
Additionally, the heading of the popup should probably have capitalisation and a question mark.

Current:

Suggested Changes: