Fix rnw-dependencies.ps1 Node.js installation failures (#1132)

## Description
The rnw-dependencies.ps1 script fails to install Node.js with the error:

`WARNING: There was a problem trying to install Node.js (LTS, >= 22.0)`
### Type of Change
- Bug fix (non-breaking change which fixes an issue)

### Why

- The script requests version 22.14.0 from `OpenJS.NodeJS.LTS`, but this
is a rolling package that now only contains 24.x versions (22.14.0
exists in `OpenJS.NodeJS.22`, not `.LTS`)


Resolves [Add Relevant Issue Here]

### What

- Removed hardcoded Node.js version - Now installs latest LTS instead of
a specific version that may not exist

## Screenshots
<img width="1199" height="322" alt="image"
src="https://github.com/user-attachments/assets/cb7bb3f2-06cf-4faa-8427-9c223c6d44b8"
/>

## Testing
tested on a new vm .Worked as expected

## Changelog
Should this change be included in the release notes:  no

Add a brief summary of the change to use in the release notes for the
next release.

###### Microsoft Reviewers: [Open in
CodeFlow](https://microsoft.github.io/open-pr/?codeflow=https://github.com/microsoft/react-native-windows/pull/15548)
###### Microsoft Reviewers: [Open in
CodeFlow](https://microsoft.github.io/open-pr/?codeflow=https://github.com/microsoft/react-native-windows-samples/pull/1132)

---------

Co-authored-by: Harini Malothu <hmalothu@microsoft.com>
Co-authored-by: Vineeth <66076509+vineethkuttan@users.noreply.github.com>

Author: 3 people

docs/rnw-dependencies.md

@@ -53,7 +53,7 @@ Alternatively, you can setup your environment manually:
 Options to install [Node.js](https://nodejs.org) separately:
   - Using [WinGet](https://aka.ms/winget) (_React Native recommended_). To use WinGet, from an elevated Command Prompt, run:
   ```bat
-  winget install OpenJS.NodeJS.LTS --version 22.14.0
+  winget install OpenJS.NodeJS.22 --version 22.22.0
   ```
   - Using [another package manager](https://nodejs.org/en/download/package-manager/) such as [Scoop](https://scoop.sh/) or [Node Version Switcher (nvs)](https://github.com/jasongin/nvs)
   - Directly from [Node.js](https://nodejs.org/en/download)