Multiple requests on 'Pending Trial Project creation requests' admin page after refresh

[Mijar007]

Describe the bug
When a user creates and submits a new 'Trial Project', the project must first be confirmed by an admin.
If the user refreshes the window after submitting, the same project appears several times in the admin confirmation list.
This should also happen if the user is allowed to create the project himself and does not confirm it directly.

I have tested various duplicate confirmation combinations on the admin side:

• First Approve, then Approve: Error message that project already exists
• First Approve, then Reject or Delete without response: No message, but created project is not deleted
• First Reject or Delete without response, then Reject or Delete without response: No message, project is not created
• First Reject or Delete without response, then Approve: Project is created --> If the user has submitted the project in the meantime under the same title but with changed data, this new submission cannot be confirmed.

To Reproduce
Steps to reproduce the behavior:

1. Create a project
2. Refresh the site after submitting the project request
3. Check the confirmation list

Expected behavior
A check should be made here to see whether the project has already been submitted and, if so, that it is not also listed in the confirmation list. The fact that the user is informed that the form data will be sent again is not sufficient.

It would be best if the user is already informed when submitting whether the project name has already been assigned (including in the confirmation lists of all admins and users).

Screenshots
Project:

Admin view:

Desktop (please complete the following information):

• OS: iOS
• Browser Edge
• Version 129.0.2792.89