Enable local backups for iOS primaries

Co-authored-by: ayumi-signal <143036029+ayumi-signal@users.noreply.github.com>

ts/background.preload.ts

@@ -280,7 +280,7 @@ import { MessageModel } from './models/messages.preload.ts';
 import { waitForEvent } from './shims/events.dom.ts';
 import { sendSyncRequests } from './textsecure/syncRequests.preload.ts';
 import { handleServerAlerts } from './util/handleServerAlerts.preload.ts';
-import { isLocalBackupsEnabled } from './util/isLocalBackupsEnabled.preload.ts';
+import { isLocalBackupsEnabled } from './util/isLocalBackupsEnabled.dom.ts';
 import { NavTab, SettingsPage, ProfileEditorPage } from './types/Nav.std.ts';
 import { initialize as initializeDonationService } from './services/donations.preload.ts';
 import { MessageRequestResponseSource } from './types/MessageRequestResponseEvent.std.ts';

ts/services/backups/index.preload.ts

@@ -83,7 +83,7 @@ import {
 import { FileStream } from './util/FileStream.node.ts';
 import { ToastType } from '../../types/Toast.dom.tsx';
 import { isAdhoc, isNightly } from '../../util/version.std.ts';
-import { isLocalBackupsEnabled } from '../../util/isLocalBackupsEnabled.preload.ts';
+import { isLocalBackupsEnabled } from '../../util/isLocalBackupsEnabled.dom.ts';
 import type { ValidateLocalBackupStructureResultType } from './util/localBackup.node.ts';
 import {
   writeLocalBackupMetadata,

ts/state/smart/Preferences.preload.tsx

@@ -99,7 +99,7 @@ import {
   SmartNotificationProfilesCreateFlow,
   SmartNotificationProfilesHome,
 } from './PreferencesNotificationProfiles.preload.tsx';
-import { isLocalBackupsEnabled } from '../../util/isLocalBackupsEnabled.preload.ts';
+import { isLocalBackupsEnabled } from '../../util/isLocalBackupsEnabled.dom.ts';
 import { getBackupKeyHash } from '../../services/backups/crypto.preload.ts';
 import { Emoji } from '../../axo/emoji.std.ts';
 import { AppProvider } from '../../windows/AppProvider.dom.tsx';

ts/util/isLocalBackupsEnabled.dom.ts

@@ -2,32 +2,16 @@
 // SPDX-License-Identifier: AGPL-3.0-only
 
 import type { ReadonlyDeep } from 'type-fest';
-import { isEnabled, type ConfigMapType } from '../RemoteConfig.dom.ts';
+import { type ConfigMapType } from '../RemoteConfig.dom.ts';
 import {
   isFeaturedEnabledNoRedux,
   isFeaturedEnabledSelector,
 } from './isFeatureEnabled.dom.ts';
-import { itemStorage } from '../textsecure/Storage.preload.ts';
-import { isNightly } from './version.std.ts';
-import { isTestOrMockEnvironment } from '../environment.std.ts';
-
-const IOS_USER_AGENT = 'OWI';
 
 export function isLocalBackupsEnabled(reduxArgs?: {
   currentVersion: string;
   remoteConfig: ReadonlyDeep<ConfigMapType> | undefined;
 }): boolean {
-  // This is a temporary guard until iOS supports importing local backups
-  // Android no longer sends its OWA agent string, so we have to rely on iOS
-  if (
-    itemStorage.get('userAgent') === IOS_USER_AGENT &&
-    !isNightly(window.getVersion()) &&
-    !isTestOrMockEnvironment() &&
-    !isEnabled('desktop.internalUser', reduxArgs?.remoteConfig)
-  ) {
-    return false;
-  }
-
   if (reduxArgs) {
     return isFeaturedEnabledSelector({
       currentVersion: reduxArgs.currentVersion,