PanelMenu keyboard navigation

[MrMcBossman]

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CodeSandbox Case (Bug Reports)
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https://primefaces.org/primevue/showcase/#/panelmenu

Current behavior
PanelMenu items cannot be opened with the keyboard by tabbing over one and hitting enter on the keyboard. They do highlight but won't open their items when hitting enter. The PanelMenu items have an attribute of tabindex="0" meaning they should be able to be interacted with via the keyboard. This is a 508 issue because only active elements should be in the tab order. The ARC Toolkit recommends: Remove the tabindex attribute or set it to '-1', OR define the role of the control.

Expected behavior
Should "click" the panelmenu item when focused on panelmenu item and enter key is hit.

Minimal reproduction of the problem with instructions
->navigate to https://primefaces.org/primevue/showcase/#/panelmenu
->tab over a panelmenu item and hit enter key
->nothing happens

What is the motivation / use case for changing the behavior?
508 compliance of Primevue components

Please tell us about your environment:
Centos 7
Chrome browser

• Vue version: 3.X
  Vue 3.2.19

• PrimeVue version: 3.4.X
  3.10

• Browser: [all | Chrome XX | Firefox XX | IE XX | Safari XX | Mobile Chrome XX | Android X.X Web Browser | iOS XX Safari | iOS XX UIWebView | iOS XX WKWebView ]
  Only tried in chrome