Fixes bug to hide edit form on save

[perryr16]

Any background context you want to provide?

From the inventory detail, after saving inventory edits the from remained in edit mode. I went back to PRs from 2023 and experienced the same behavior

What's this PR do?

• toggles a scope variable that hides the form.

How should this be manually tested?

• inventory detail
• edit
• make edits
• save
• confirm
• 'edit' button should replace 'save' and 'cancel' buttons

What are the relevant tickets?

Screenshots (if appropriate)