Restrict themselves from being listed as an approver

Problem Definition

Currently approvers can be configured to have default values or user input. However, by allowing user input would allow the user to select themselves as the approver.
JSDCLOUD-6249 feature has been released, but users can still select themselves in the approver field.

Suggested Solution

Not allow themselveselves to be selected in the approvers field.

Why this is important

If they can select themself in the approver field, it will confuse the user.