Galleria: GalleriaItem activeItem has stale reference when value array is changed.

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Describe the bug

GalleriaItem activeItem has a stale reference when value array is changed.

The activeItem reference is setup whenever the activeIndex is set. This causes an issue whenever the value array is updated, without changing the activeIndex, as the activeItem is still referencing the previous object.

Environment

Standard PrimeNG and Angular application

Reproducer

No response

Angular version

13.3.9

PrimeNG version

13.4.1

Build / Runtime

TypeScript

Language

TypeScript

Node version (for AoT issues node --version)

16.14.2

Browser(s)

No response

Steps to reproduce the behavior

1. Load an array of objects into the value input of a Galleria component, for instance, the example in the showcase documentation.
2. Programatically change/update the value array, for example, reversing the order of the image objects.
3. Notice that the current/active GalleriaItem does not update with the new image src.
4. Upon inspection, the GalleriaItem.activeItem will be referencing the initial value object

Expected behavior

When the value array is updated, the full component tree should update accordingly to the new object sources, without needing to manually change the activeIndex