The Approve/Reject Buttons are still active on the submitter page in Project Billing

Summary: The approve/reject button remains enabled in the submitter page in the project invoice approval

Content (please ensure you mask any confidential information): I encountered an issue in billing approval where the Approve and Reject buttons remain active on the submitter's page, even though these actions should only be available to users with the appropriate approval roles.

In the expectation workflow, once the submitter submits the invoice for approval, they should no longer have the ability to approve or reject the transaction. However, the system still displays active Approve/Reject buttons for the submitter, which may lead to unauthorized approvals and disrupt the expected approval hierarchy.