AccordionTab error with v-if="false"

[andilem]

I'm submitting a ...

[x] bug report 
[ ] feature request
[ ] support request

CodeSandbox Case (Bug Reports)
https://codesandbox.io/s/determined-glade-ks1s3?file=/src/App.vue

Current behavior
An AccordionTab with v-if="false" causes a TypeError: child.children.forEach is not a function because child seems to be a string.

Expected behavior
An AccordionTab with v-if="false" is just removed from the DOM.

• Vue version: 3.1.1
• PrimeVue version: 3.5.0
• Browser: [Chrome | ??? ]