telemetry: track interactive session state (#12856)

Co-authored-by: owenofbrien <86964623+owenofbrien@users.noreply.github.com>

packages/core/src/tools/write-file.test.ts

@@ -96,6 +96,7 @@ const mockConfigInternal = {
       registerTool: vi.fn(),
       discoverTools: vi.fn(),
     }) as unknown as ToolRegistry,
+  isInteractive: () => false,
 };
 const mockConfig = mockConfigInternal as unknown as Config;