fix(webkit): import channels via relative path in WebDriver backend

The @protocol/channels alias is not configured in playwright-core's
tsconfig, causing TS2307 errors. Use the relative ../../channels path
used throughout the server code instead.

Author: yury-s

packages/playwright-core/src/server/webkit/webdriver/wdBrowser.ts

@@ -33,7 +33,7 @@ import type { SdkObject } from '../../instrumentation';
 import type { InitScript, Page } from '../../page';
 import type { Progress } from '../../progress';
 import type * as types from '../../types';
-import type * as channels from '@protocol/channels';
+import type * as channels from '../../channels';
 
 const kLaunchScheme = 'webdriver+launch://';
 

packages/playwright-core/src/server/webkit/webdriver/wdPage.ts

@@ -31,7 +31,7 @@ import type * as frames from '../../frames';
 import type { InitScript, PageDelegate } from '../../page';
 import type { Progress } from '../../progress';
 import type * as types from '../../types';
-import type { PagePdfParams } from '@protocol/channels';
+import type { PagePdfParams } from '../../channels';
 
 /**
  * PageDelegate backed by a classic W3C WebDriver session.