Block quick actions for test case issue type

Problem to solve

On #245303 (closed) we introduced some code to block features by issue type, we also did block promotions quick action for test cases.

This is a follow up to block additional quick actions that are not supposed to be allowed for test cases.

Block the following quick actions for test cases:

• /assign @user !50396 (merged)
• /reassign @user1 @user2 !50396 (merged)
• /epic !40509 (merged)
• /confidential !50460 (merged)

Urgency

If these quick actions are used currently, no real harm will occur as we aren't displaying these attributes anyway. If the /confidential quick action is used, the test case may be hidden from those who do not have reporter access, and the confidentiality will need to be removed via REST API or GraphQL.