[Inspector] refresh embedded Agent Inspector UI

[herohua]

Summary

Refresh the embedded Agent Inspector UI shipped with the azure.ai.inspector azd extension.

Agent Inspector updates

• Search Responses events by event type or JSON content, filter by category, and see the number of matching events.
• Copy and download the filtered event snapshot as JSONL.
• Hide Fix and Resolve with Copilot actions in the azd Inspector, where these actions are unavailable.
• Keep tool results attached to the correct calls, including completed results without an explicit status.
• Restore pending MCP approvals and OAuth consent requests after an incomplete continuation.
• Show consistent error details for available failure actions.

Validation

• Refresh the embedded Agent Inspector UI assets.
• Build the local Inspector extension.
• Run the Inspector extension tests.