fix(ios): stabilize keyboard toolbar, image picker, and scrolling (#15182)

## Summary
- keep the editor active when iOS keyboard toolbar interactions move
focus into range-sync excluded widgets
- use the native iOS image picker/source sheet and sync native
presentation with the app theme
- pin `ListViewKit` to `1.1.6` so the iOS workspace resolves with Xcode
16.3
- restore vertical scrolling in the iOS `WKWebView` by removing the
global `contentOffset` reset while preserving zoom prevention

## Test plan
- [x] `yarn vitest --run --config \"vitest.config.ts\"
--browser.enabled=false \"src/__tests__/inline/active.unit.spec.ts\"`
- [x] `LANG=en_US.UTF-8 LC_ALL=en_US.UTF-8 xcodebuild
-resolvePackageDependencies -workspace
\"packages/frontend/apps/ios/App/App.xcworkspace\" -scheme \"App\"`
- [x] `xcodebuild -workspace \"App.xcworkspace\" -scheme \"App\"
-destination \"generic/platform=iOS Simulator\" build
CODE_SIGNING_ALLOWED=NO ONLY_ACTIVE_ARCH=YES ARCHS=arm64`
- [x] Xcode build validation for the updated PR branch

blocksuite/framework/std/src/event/dispatcher.ts

@@ -4,6 +4,7 @@ import { signal } from '@preact/signals-core';
 
 import { LifeCycleWatcher } from '../extension/index.js';
 import { KeymapIdentifier } from '../identifier.js';
+import { shouldDeactivateEditorOnFocusOut } from '../inline/range/active.js';
 import type { BlockStdScope } from '../scope/index.js';
 import { type BlockComponent, EditorHost } from '../view/index.js';
 import {
@@ -174,16 +175,21 @@ export class UIEventDispatcher extends LifeCycleWatcher {
       this._setActive(true);
     });
     this.disposables.addFromEvent(document, 'focusout', e => {
-      if (e.relatedTarget && !this.host.contains(e.relatedTarget as Node)) {
+      if (shouldDeactivateEditorOnFocusOut(this.host, e.relatedTarget)) {
         this._setActive(false);
       }
     });
-    this.disposables.addFromEvent(this.host, 'blur', () => {
+    this.disposables.addFromEvent(this.host, 'blur', e => {
       if (_dragging) {
         return;
       }
 
-      this._setActive(false);
+      if (
+        !e.relatedTarget ||
+        shouldDeactivateEditorOnFocusOut(this.host, e.relatedTarget)
+      ) {
+        this._setActive(false);
+      }
     });
     this.disposables.addFromEvent(this.host, 'dragover', () => {
       _dragging = true;