Can we stop employees from adding attachments to resolved or closed help desk requests?

Summary: We need to prevent users from adding attachments to resolved or closed requests. Since adding an attachment doesn't update the "last updated" timestamp or even require saving of the request, we have people adding documents after a request was resolved and we are not able to identify those changes. This has lead to adverse impact to employees in certain cases.

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Version (include the version you are using, if applicable):

24B Redwood Help Desk

Code Snippet (add any code snippets that support your topic, if applicable):

n/a