fix: browser_tests Phase 3 - type annotations and final fixes

- Add 'this: ExpectMatcherState' to ComfyPage.ts makeMatcher function
- Add type annotations to parameters (slot, comfyPage, w, inputs)
- Add 'as any' for ExtensionManager dynamic properties (workflow, focusMode, colorPalette, queueSettings)
- Fix keybindings import paths to use '/types' suffix
- Cast Subgraph types and CanvasPointerEvent in SubgraphHelper
- Fix test setting IDs with 'as any' in useSettingSearch, extensionAPI specs
- Fix AppReadiness, colorPalette, featureFlags type issues
- Replace removed ComfyPage properties with DefaultGraphPositions
- Remove unused _canvas parameter from ClipboardHelper
- Add non-null assertions for app, vaeInput, convertedInput

Reduces browser_tests typecheck errors from 72 to 0.

Amp-Thread-ID: https://ampcode.com/threads/T-019c17a3-2482-7115-8e42-ba0bbb0c9cda
Co-authored-by: Amp <amp@ampcode.com>

browser_tests/fixtures/helpers/SettingsHelper.ts

@@ -13,8 +13,8 @@ export class SettingsHelper {
   }
 
   async getSetting<T = unknown>(settingId: string): Promise<T> {
-    return await this.page.evaluate(async (id) => {
+    return (await this.page.evaluate(async (id) => {
       return await window.app!.extensionManager.setting.get(id)
-    }, settingId)
+    }, settingId)) as T
   }
 }