Dropdown onkeydown item search not working properly

[dacxjo]

[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

CodeSandbox Case (Bug Reports)

https://codesandbox.io/s/keen-goldstine-fccts?file=/src/App.vue

Current behavior
Item search not working properly while pressing the keyboard numpad keys (not keys above querty)

Expected behavior
On pressing the numpad keys, the item with the first char equals to key number should be selected

What is the motivation / use case for changing the behavior?
Having a list of numbers to select for example, a VAT number list, where the label is a string that starts with a number, and the value a number.

• Vue version: 3.X
  3.0.5

• PrimeVue version: 3.4.X
  3.5.1