SWA CLI not in path after installing locally

Before filing this issue, please ensure you're using the latest CLI by running `swa --version` and comparing to the latest version on [npm](https://www.npmjs.com/package/@azure/static-web-apps-cli).

**Are you accessing the CLI from the default port `:4280` ?**

- [ ] No, I am using a different port number (`--port`) and accessing the CLI from that port
- [x] Yes, I am accessing the CLI from port `:4280`

> Make sure you are accessing the URL printed in the console when running `swa start`!

**ℹ️ NOTE: Make sure to enable debug logs when running any `swa` commands using `--verbose=silly`**

**Describe the bug**
I'm trying to install the CLI locally and then validate the install: https://azure.github.io/static-web-apps-cli/docs/use/install

```
cd projectDir/
npm init
npm install -D @azure/static-web-apps-cli
swa --version
```

**RESULT**: `swa: The term 'swa' is not recognized as a name of a cmdlet, function, script file, or executable program. Check the spelling of the name, or if a path was included, verify that the path is correct and try again.`

Even when I restart the terminal, this remains the case.

**To Reproduce**
- Use Windows 11
- Use node 22 (`nvm install lts && nvm use 22`)

**Expected behavior**
According to the docs, this should just work. `swa` shouldn't need a global install to work.

**Screenshots**
None

**Desktop (please complete the following information):**

- OS: [e.g. iOS]
- Version [e.g. 22]

**Additional context**
Add any other context about the problem here.

Inizia con le istruzioni di installazione disponibili all’indirizzo https://azure.github.io/static-web-apps-cli/docs/use/install e riproduci su Windows 11 con Node 22 i comandi elencati per l’installazione locale e `swa --version`. Verifica come dovrebbe essere invocata la CLI installata localmente e confronta il risultato con il workflow documentato. Il lavoro è completato quando l’installazione locale documentata consente agli utenti di verificare la CLI senza un’installazione globale.

Scritto dal modello di indicizzazione a partire dal testo della issue.