MultiSelect: Add onRemove callback function, the same as in the Chip component

[datacampsis]

Discussed in https://github.com/orgs/primefaces/discussions/364

^{Originally posted by datacampsis November 1, 2023}
In the Chip component, you can call the function onRemove to get the removed value.
In MultiSelect component, using display="chip" does not have this function, and it becomes necessary in some cases.

[melloware]

Fixed in PrimeReact