[MultiSelect] Component state does not reflect model value after using array push

[FeBe95]

Describe the bug

When updating the model value of a MultiSelect component using modelValue.push(newItemId) the component does not change.

Pull Request Link

#8154

Reason for not contributing a PR

• Lack of time
• Unsure how to implement the fix/feature
• Difficulty understanding the codebase
• Other

Other Reason

No response

Reproducer

https://stackblitz.com/edit/2wqklk72?file=src%2FApp.vue

Environment

Windows 11

Vue version

3.5.21

PrimeVue version

4.3.9

Node version

No response

Browser(s)

No response

Steps to reproduce the behavior

• Push a new selected item to the model value (e.g. when mounted)
• MultiSelect component doesn't change

Expected behavior

• The item in the MultiSelect is being selected programmatically

Example

mounted() {
  this.selectedCitiesOne = ['NY'];
  this.selectedCitiesTwo.push('NY');
},