There’s no “workflow” account, if it creates a SharePoint item, it’s created under that account. If it checks mailbox, it checks mailbox of that account, etc. Which can be good or bad.
When you build an approval flow in Power Automate, you should always consider how to store the outcome. By default it’s stored in the Approvals app, but that’s not a place that everyone can access. Therefore, you should store it also somewhere else, somewhere easily accessible for everyone.
How to log approval history in a SharePoint list with Power Automate