In DSpace 7.6.3/8.1, it's not possible to remove data from a submission form field of type "name" or remove such a field entirely. Error messages are logged to the browser console

[MW3000]

Describe the bug

In DSpace 8.1, when using a submission form field of type "name" it is not possible to delete data from such a field or to delete such a field entirely.

Instead an error message is logged to the console. After saving and reopening a submission, the "deleted" data just reappears.

To Reproduce

Steps to reproduce the behavior:

1. Start a new submission with a form that includes a field of type "name". If you use the demo site, you could add a journal submission, then you can test with the "editor" field.
2. Enter data into a field of type "name"
3. Save your submission
4. Delete the data from the field of type "name", or if the field is repeatable you can also trash the field
5. Save your submission for later
6. Open your submission again
7. The "deleted" data is back again!!
8. Check the error console of your browser for error messages

Expected behavior

When you empty or delete a field of type "name" the data should be deleted, like with all other field types

Browser console error message:

[Error] ERROR
TypeError: null is not an object (evaluating 'P.hasValue')
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onChange — 1717.9091a77de8e67e1a.js:1:53311
(anonymous function) — 1717.9091a77de8e67e1a.js:1:48218
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next — main.83590f2f1f9c400b.js:1:1908892
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onChange — main.83590f2f1f9c400b.js:1:2703765
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Rm — main.83590f2f1f9c400b.js:1:2306490
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next — main.83590f2f1f9c400b.js:1:1906069
emit — main.83590f2f1f9c400b.js:1:2221500
onChange — main.83590f2f1f9c400b.js:1:2736553
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[tdonohue]

Pulling this over to our maintenance board & marking as high priority, since that obviously sounds like incorrect behavior. This needs a volunteer.

[AbhinavS96]

I can take a look at this (from Atmire)