Testing components will throw a Cannot read properties of undefined (reading 'unstyled') error

[LanFeusT23]

Describe the bug

Running tests with the PrimeVue 3.32.1 (likely happens with any PrimeVue version that has the new unstyled feature, even if you do not need to use it for it to break) will throw an error due to unstyled property being access on a possible undefined config object.

TypeError: Cannot read properties of undefined (reading 'unstyled')
 ❯ Proxy.isUnstyled node_modules/primevue/basecomponent/basecomponent.cjs.js:245:73
 ❯ ReactiveEffect.run node_modules/@vue/reactivity/dist/reactivity.cjs.js:182:19
 ❯ ComputedRefImpl.get value [as value] node_modules/@vue/reactivity/dist/reactivity.cjs.js:1143:33
 ❯ Object.get [as isUnstyled] node_modules/@vue/runtime-core/dist/runtime-core.cjs.js:3399:22
 ❯ Object.get node_modules/@vue/runtime-core/dist/runtime-core.cjs.js:2925:19
 ❯ getter node_modules/@vue/runtime-core/dist/runtime-core.cjs.js:3508:90
 ❯ callWithErrorHandling node_modules/@vue/runtime-core/dist/runtime-core.cjs.js:156:32
 ❯ ReactiveEffect.getter [as fn] node_modules/@vue/runtime-core/dist/runtime-core.cjs.js:1689:22
 ❯ ReactiveEffect.run node_modules/@vue/reactivity/dist/reactivity.cjs.js:182:19
 ❯ job node_modules/@vue/runtime-core/dist/runtime-core.cjs.js:1745:31

Reproducer

https://codesandbox.io/p/sandbox/primevue-test-bug-forked-6w4v6f?file=/src/__tests__/App.spec.js:1,1

PrimeVue version

3.32.1

Vue version

3.x

Language

TypeScript

Build / Runtime

Vue CLI App

Browser(s)

No response

Steps to reproduce the behavior

1. Create a new vue app and install primevue
2. Create a component that uses any component (primevue/button for example)
3. Write a test with a snapshot for the component

The test will not run and throw the error TypeError: Cannot read properties of undefined (reading 'unstyled')

Expected behavior

The tests should pass and create a new snapshot.