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/tests/nodeSearchBox.spec.ts

@@ -1,7 +1,5 @@
-import {
-  comfyExpect as expect,
-  comfyPageFixture as test
-} from '../fixtures/ComfyPage'
+import { comfyExpect as expect, comfyPageFixture as test } from '../fixtures/ComfyPage';
+import type { ComfyPage } from '../fixtures/ComfyPage';
 
 test.beforeEach(async ({ comfyPage }) => {
   await comfyPage.settings.setSetting('Comfy.UseNewMenu', 'Disabled')
@@ -138,7 +136,10 @@ test.describe('Node search box', { tag: '@node' }, () => {
   })
 
   test.describe('Filtering', () => {
-    const expectFilterChips = async (comfyPage, expectedTexts: string[]) => {
+    const expectFilterChips = async (
+      comfyPage: ComfyPage,
+      expectedTexts: string[]
+    ) => {
       const chips = comfyPage.searchBox.filterChips
 
       // Check that the number of chips matches the expected count