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/affine/shared/src/utils/file/filesys.ts

@@ -14,8 +14,14 @@ interface OpenFilePickerOptions {
   multiple?: boolean | undefined;
 }
 
+export type NativeImageFilesPicker = () => Promise<File[] | null>;
+
+const NATIVE_IMAGE_FILES_PICKER_KEY =
+  '__AFFINE_NATIVE_IMAGE_FILES_PICKER__' as const;
+
 declare global {
   interface Window {
+    [NATIVE_IMAGE_FILES_PICKER_KEY]?: NativeImageFilesPicker;
     // Window API: showOpenFilePicker
     showOpenFilePicker?: (
       options?: OpenFilePickerOptions
@@ -29,6 +35,17 @@ declare global {
   }
 }
 
+export function registerNativeImageFilesPicker(
+  picker: NativeImageFilesPicker | null
+) {
+  if (picker) {
+    window[NATIVE_IMAGE_FILES_PICKER_KEY] = picker;
+    return;
+  }
+
+  delete window[NATIVE_IMAGE_FILES_PICKER_KEY];
+}
+
 // Minimal polyfill for FileSystemDirectoryHandle to iterate over files
 interface FileSystemDirectoryHandle {
   kind: 'directory';
@@ -195,7 +212,18 @@ export async function snapshotFile(file: File, relativePath?: string) {
 }
 
 export async function snapshotFiles(files: File[]) {
-  return Promise.all(files.map(file => snapshotFile(file)));
+  const results = await Promise.allSettled(
+    files.map(file => snapshotFile(file))
+  );
+  const snapshots: File[] = [];
+  for (const result of results) {
+    if (result.status === 'fulfilled') {
+      snapshots.push(result.value);
+    } else {
+      console.error('Failed to snapshot file', result.reason);
+    }
+  }
+  return snapshots;
 }
 
 function canUseFileSystemAccessAPI(
@@ -332,7 +360,11 @@ export async function openDirectory(
             if (fileHandle.getFile) {
               const file = await fileHandle.getFile();
               if (options?.snapshot) {
-                files.push(await snapshotFile(file, relativePath));
+                try {
+                  files.push(await snapshotFile(file, relativePath));
+                } catch (error) {
+                  console.error('Failed to snapshot file', relativePath, error);
+                }
               } else {
                 Object.defineProperty(file, 'webkitRelativePath', {
                   value: relativePath,
@@ -410,6 +442,15 @@ export async function openSingleFileWith(
 }
 
 export async function getImageFilesFromLocal() {
+  const nativePicker = window[NATIVE_IMAGE_FILES_PICKER_KEY];
+  if (nativePicker) {
+    try {
+      return (await nativePicker()) ?? [];
+    } catch (err) {
+      console.error(err);
+    }
+  }
+
   const files = await openFilesWith('Images');
   return files ?? [];
 }