chore(mobile): set doc readonly in edgeless mode (#9068)

Close [BS-1984](https://linear.app/affine-design/issue/BS-1984/edgeless-禁用编辑后，白板上，image-block-chat-block-可以移动), [BS-1918](https://linear.app/affine-design/issue/BS-1918/edgeless-移动端只读模式下，应当是单指移动，双指缩放), [BS-2035](https://linear.app/affine-design/issue/BS-2035/切换-edgeless-view-变为只读)

packages/frontend/i18n/src/resources/en.json

@@ -1258,6 +1258,8 @@
   "com.affine.settings.workspace.experimental-features.enable-snapshot-import-export.description": "Once enabled, users can import and export blocksuite snapshots.",
   "com.affine.settings.workspace.experimental-features.enable-multiple-cloud-servers.name": "Multiple Cloud Servers",
   "com.affine.settings.workspace.experimental-features.enable-multiple-cloud-servers.description": "Once enabled, users can connect to selfhosted cloud servers.",
+  "com.affine.settings.workspace.experimental-features.enable-mobile-edgeless-editing.name": "Enable Edgeless Editing",
+  "com.affine.settings.workspace.experimental-features.enable-mobile-edgeless-editing.description": "Once enabled, users can edit edgeless canvas.",
   "com.affine.settings.workspace.not-owner": "Only an owner can edit the workspace avatar and name. Changes will be shown for everyone.",
   "com.affine.settings.workspace.preferences": "Preference",
   "com.affine.settings.workspace.state.local": "Local",