Slider: range mode aria-valuenow isn't related to actual values

Describe the bug

When using the slider with step 5, min 10, max 50, I would expect that the aria-valuenow would reflect the steps' values when they are selected. However, the aria-valuenow is instead a copy of the style="left: ... percentage.

Reproducer

https://codesandbox.io/s/primereact-test-forked-31vw6s?file=/src/index.js

PrimeReact version

9.2.2

React version

18.x

Language

TypeScript

Build / Runtime

Create React App (CRA)

Browser(s)

No response

Steps to reproduce the behavior

1. Drag one of the handles of the slider
2. Inspect the slider handle element
3. View the aria-valuenow (as compared to the steps that should be there, between 10-50 by fives)

Expected behavior

The handle's aria-valuenow value should be the same as the "selected" step value. In this example, if I drag the left side handle up 1 step, the value should be 15.

Start with the linked CodeSandbox reproducer and the Slider range-mode implementation; inspect how each handle's aria-valuenow is computed for min 10, max 50, and step 5. Done means the reported value matches the selected step, such as 15, rather than the handle's CSS percentage.