Create a new process: no feedback when invalid name is entered

[MMilosz]

Describe the bug

Currently, entering a non-existent script name at /processses/new and pressing "Save" does not provide any visual feedback (no error message, no notification)

Interestingly, when a user selects any script and then deletes the text from the input field, only then the validation error "Script is required" appears (see screenshot):

To Reproduce

Reproduced on sandbox.dspace.org and demo.dspace.org using Google Chrome v151.0.

1. Log in as admin
2. Navigate to /processes/new
3. Enter a process name that does not exist
4. Click the 'Save' button
5. Observe that nothing happens (no error, no notification)

The validation error "Script is required" appears only under a certain condition:

1. Select any script
2. Delete its name from the input
3. Observe the "Script is required" error info suddenly appears

Expected behavior

User should receive a clear feedback on what action is required to proceed.

A minimal fix would be to show the "Script is required" error when pressing "Save" with empty/invalid input. Additionally, the "Save" button could be disabled until the form is valid

Related work

Nothing relevant found

[abelc-escire]

Hi @lgeggleston, I hope you are doing great. Could you please assign me the task?

Regards!