awslabsbedrock_kb_retrieval_mcp_server failed to loadno

### Checks

- [x] I have searched [github.com/aws/amazon-q-developer-cli/issues](https://github.com/aws/amazon-q-developer-cli/issues?q=) and there are no duplicates of my issue

### Operating system

macOS 15.4.1 (24E263)

### Expected behaviour

The awslabsbedrock_kb_retrieval_mcp_server MCP server should load successfully to enable Bedrock knowledge base retrieval functionality.

### Actual behaviour

The awslabsbedrock_kb_retrieval_mcp_server MCP server has failed to load when using Amazon Q CLI.

```
[chat-transcript]
> /help

> /issue ✗ awslabsbedrock_kb_retrieval_mcp_server has failed to load:

I understand you're trying to report an issue with the `awslabsbedrock_kb_retrieval_mcp_server` MCP server that has failed to load. To properly report this issue, we can use the `report_issue` tool to create a GitHub issue with the details.

Let me help you create this issue report:
[Tool uses: report_issue]
```

### Steps to reproduce

_No response_

Inizia riproducendo il malfunzionamento su macOS 15.4.1 tramite il flusso `/help` di Amazon Q CLI e il tentativo di caricamento di `awslabsbedrock_kb_retrieval_mcp_server`. Non sono indicati file, test o passaggi per la riproduzione; il lavoro è considerato completato quando il MCP server viene caricato correttamente e abilita il recupero dalla knowledge base di Bedrock.

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