[Azure Terraform][Namespace] Failed to trigger mcp tools

**Description:**
In `Namespace` mode, testing prompts related to [Azure Terraform](https://github.com/microsoft/mcp/blob/main/servers/Azure.Mcp.Server/docs/e2eTestPrompts.md#azure-terraform), including:
- Generate an aztfexport command to export a single Azure resource to Terraform
- Export all resources in resource group my-rg to Terraform
- Export resource group my-rg to Terraform using the azapi provider

Tools `azureterraform_aztfexport_resource` and `azureterraform_aztfexport_resourcegroup` were not triggered successfully in the conversation.

**Steps to Reproduce:**
1. Start mcp server in `Namespace` mode or `All` tools mode.
2. Open GitHub Copilot in VS Code and [switch to Agent mode](https://code.visualstudio.com/docs/copilot/chat/chat-agent-mode).
3. Enter the test prompt.

**Environment:**
- OS: Windows.
- Vscode Version: 1.134
- Large Language Model: **GPT-5.6 Sol**
- Azure MCP Server: **3.0.37**

**Expected Behavior:**
The mcp tools could be triggered successfully in namespace mode.

@RickWinter and @g2vinay for notification