Checkbox true-value / false-value does not work

[martinfruehmorgen]

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[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
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CodeSandbox Case (Bug Reports)
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https://codesandbox.io/s/serene-yonath-wib79?file=/src/CheckboxDemo.vue

Current behavior
Checkbox displayed value is true / false

Expected behavior
Chechbox displayed value should be 1 / 0

Minimal reproduction of the problem with instructions
https://codesandbox.io/s/serene-yonath-wib79?file=/src/CheckboxDemo.vue

What is the motivation / use case for changing the behavior?
Prime Vue 3.5.0

Please tell us about your environment:

• Vue version: 3.X
  3

• PrimeVue version: 3.4.X
  3.5.0

• 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 ]