telemetry: track interactive session state (#12856)

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

packages/core/src/tools/web-fetch.test.ts

@@ -142,6 +142,7 @@ describe('WebFetchTool', () => {
       setApprovalMode: vi.fn(),
       getProxy: vi.fn(),
       getGeminiClient: mockGetGeminiClient,
+      isInteractive: () => false,
     } as unknown as Config;
   });