[Namespace mode] The E2E prompt in `Azure Monitor` does not trigger `monitor_webtests_get` tool

[Menghua1]

Description:
In Namespace modes, entering List all Web Test resources in my subscription or List all Web Test resources in my subscription in <resource_group> does not trigger the expected mcp tool monitor_webtests_get.

• Test Prompt: List all Web Test resources in my subscription in <resource_group>

- Test Prompt: `List all Web Test resources in my subscription`

Steps to Reproduce:

1. Start mcp server in Namespace.
2. Open GitHub Copilot in VS Code and switch to Agent mode.
3. Click Refresh on the tools list, and select the MCP Server: Azure MCP.
4. Enter the test prompt.

Environment:

• OS: Windows.
• Vscode Version: 1.122.1
• Large Language Model: Claude Sonnet 4.6
• Azure MCP Server: 3.0.15

Expected Behavior:
These prompts can successfully trigger the expected mcp tool.

@RickWinter and @g2vinay for notification

[jairmyree]

I'm looking into this issue.