misc: include used files in flow-report tsconfig (GoogleChrome#14174)

Author: connorjclark

flow-report/test/common-test.tsx

@@ -7,7 +7,6 @@
 import jestMock from 'jest-mock';
 import {act, render} from '@testing-library/preact';
 
-// @ts-ignore: File is not under 'rootDir'
 import {timers} from '../../lighthouse-core/test/test-env/fake-timers.js';
 import {FlowStepThumbnail} from '../src/common';
 

flow-report/test/setup/env-setup.ts

@@ -11,7 +11,6 @@ import jestMock from 'jest-mock';
 import {JSDOM} from 'jsdom';
 import * as preact from 'preact';
 
-// @ts-ignore: File is not under 'rootDir'
 import {LH_ROOT} from '../../../root.js';
 
 // These modules aren't imported correctly if these directories aren't defined to use ES modules.

flow-report/tsconfig.json

@@ -20,5 +20,7 @@
     "**/*.tsx",
     "./types",
     "../types/test.d.ts",
+    "../root.js",
+    "../lighthouse-core/test/test-env/fake-timers.js",
   ],
 }