[BUG] Conflicting case closed button vs. case closed status

[jasonwuwrf]

Related to #1050 [BUG] Conflicting case re-open button vs. non-closed statuses

Describe the bug
You can "close a case" with the status, but it does not really close the case it just put in a status the system does not actually recognize as a closed case. A truly closed case is closed using the "Close Case" button on the manage case dialog.

To Reproduce
Steps to reproduce the behavior:

1. Go to a case and manage it
2. Change the case status to "Closed" and it just sets a new status
3. Click the "Close Case' button and confirm closure
4. Case is now actually closed with a status date

Expected behavior
When selecting the "Closed" status, invoke the "Close Case" dialog and actually close the case properly.

Screenshots

Desktop (please complete the following information):
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Smartphone (please complete the following information):
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Additional context