Incorrect information about the creator of a purchase order is displayed

[Catrya]

When a buyer creates a purchase order, and an administrator checks it with /checkorder, the information is displayed incorrectly:

• If the order has already been taken, it will appear that the creator is the seller (but it was the buyer)
• If the order is pending, it will show: Creator: @

With a sell order the bug does not occur

[ToRyVand]

Hi! 👋

I've implemented a fix for this issue in PR #714.

The solution adds a "Mark as pending" button alongside the cancel button after the hold invoice is shown. This allows sellers to reset the order back to PENDING status without losing the order.

Implementation follows the existing pattern of cancelShowHoldInvoice for consistency.

Happy to iterate on any feedback! This is my first contribution to the project. 🙂

cc: @Catrya (original reporter)