[Azure Migrate] [All & Namespace] Tool `azuremigrate_platformlandingzone_request` failed to create a platform landing zone

**Description:**
In both `Namespace` mode and `All` tools mode, testing prompts related to [Azure Migrate](https://github.com/microsoft/mcp/blob/main/servers/Azure.Mcp.Server/docs/e2eTestPrompts.md#azure-migrate), including:
- Generate a platform landing zone for migrate project in resource group
- Generate a platform landing zone
- Generate a platform landing zone and create a new migrate project with name in resource group
- Start landing zone generation for migrate project

Tool `azuremigrate_platformlandingzone_request` succeeded to be triggered and send the request. However, when I attempted to download the result, it returned a resource creation failure error:

**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 tool `azuremigrate_platformlandingzone_request` can successfully create the resouce.

@RickWinter and @g2vinay for notification