Numpad comma separator support for Chips

[Christoph-Wagner]

I'm submitting a ... (check one with "x")

[X] bug report => Search github for a similar issue or PR before submitting
[ ] feature request => Please check if request is not on the roadmap already https://github.com/primefaces/primevue/wiki/Roadmap
[ ] support request => Please do not submit support request here, instead see http://forum.primefaces.org/viewforum.php?f=110

Currently, the Chips-Component has the following code:

this.separator === ',' && event.which === 188

Besides which being deprecated, it also reports 110 for the numpad comma on German (and presumably others with , as decimal separator) keyboard layouts. event.key reports ,. event.code reports NumpadDecimal which is not helpful either. My suggestion would be to use event.key to check instead. Browser compatibility seems to be adequate. If wanted, I can create a PR for this.

CodeSandbox Case (Bug Reports)
The bug is basic and already affects the demo https://primefaces.org/primevue/#/chips

Current behavior
, does not work as separator when using the numpad

Expected behavior
, works as separator as documented, or the documentation needs a warning.

Minimal reproduction of the problem with instructions
Change the keyboard to German (decimal separator is , in German), try to use the , from the numpad (same position as . in the US Layout as separator.

What is the motivation / use case for changing the behavior?
It’s not working as documented

Please tell us about your environment:

Any OS using a German KB Layout

• Vue version: 3.X
  Latest

• PrimeVue version: 3.4.X
  Latest

• Browser: Firefox, Chrome

[Christoph-Wagner]

While that fixes the issue for German keyboards, it’s now broken for others. event.which is 110 for all Numpad DecimalSeparators, including those like en-us that use .. So with this change, it would be broken exactly for those layouts that did not have an issue before.