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/sidebar/nodeLibrary.spec.ts

@@ -301,9 +301,9 @@ test.describe('Node library sidebar', () => {
     await comfyPage.nextFrame()
 
     // Verify the color selection is saved
-    const setting = await comfyPage.settings.getSetting(
-      'Comfy.NodeLibrary.BookmarksCustomization'
-    )
+    const setting = await comfyPage.settings.getSetting<
+      Record<string, { icon?: string; color?: string }>
+    >('Comfy.NodeLibrary.BookmarksCustomization')
     await expect(setting).toHaveProperty(['foo/', 'color'])
     await expect(setting['foo/'].color).not.toBeNull()
     await expect(setting['foo/'].color).not.toBeUndefined()