Fixes Incorrect operation of the keyword selection field with < and , on the Submission page

[VictorHugoDuranS]

Hi @tdonohue , I'm @jtimal partner, I like to share this PR with you:

References

• Fixes #2679

Description

I changed the current validation for tag component in on keyup function for validate the keys "ENTER", "," and ";" for add the tags to Chips template.

Instructions for Reviewers

I added validation for the keys "," and ";" add the labels to the chip template because the current functionality splits the value using the keys mentioned above so I think it is the correct way to validate as it causes an error if we don't validate by those keys incorrectly separating those values, i attach an example:

https://github.com/DSpace/dspace-angular/assets/25066032/46a8b86d-aac2-40a0-839e-c9dced1451ad

With validation I simplified the separation of values.

List of changes in this PR:

• Change the validation considering the keys "," and ";" using the properties keyCode and key of the keyup event

To review and check: Create a new item or edit item Enter a keyword with the symbol , or <

Checklist

• [x] My PR is small in size (e.g. less than 1,000 lines of code, not including comments & specs/tests), or I have provided reasons as to why that's not possible.
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• [x] If my PR fixes an issue ticket, I've linked them together.