InputNumber: InputNumber with horizontal and vertical buttons are not accessible through keyboard.

[akshayaqburst]

Describe the bug

InputNumber: InputNumber with horizontal and vertical buttons are not accessible through keyboard.

Environment

System:
OS: Linux 5.15 Ubuntu 20.04.6 LTS (Focal Fossa)
CPU: (8) x64 11th Gen Intel(R) Core(TM) i7-1165G7 @ 2.80GHz
Memory: 1.61 GB / 7.47 GB
Container: Yes
Shell: 5.0.17 - /bin/bash
Binaries:
Node: 18.20.2 - ~/.nvm/versions/node/v18.20.2/bin/node
Yarn: 1.22.22 - ~/.nvm/versions/node/v18.20.2/bin/yarn
npm: 10.5.0 - ~/.nvm/versions/node/v18.20.2/bin/npm
pnpm: 9.5.0 - ~/.nvm/versions/node/v18.20.2/bin/pnpm
npmPackages:
react: 18.3.1 => 18.3.1

Reproducer

https://primeng.org/inputnumber#buttons

Angular version

17.x.x

PrimeNG version

17.18.11

Build / Runtime

Angular CLI App

Language

TypeScript

Node version (for AoT issues node --version)

18.x.x

Browser(s)

No response

Steps to reproduce the behavior

1. Go to https://primeng.org/inputnumber#buttons
2. Type something in the input box.
3. Try navigating through the buttons using tab key.
4. The focus goes to next section without going to increment and decrement buttons.

Expected behavior

The focus should go to increment and decrement buttons, and user should be able to press enter and update values.