feat(mobile): add read only mode (#19368)

* feat(mobile): Add Kid (Readonly) Mode toggle

This commit introduces a "Kid (Readonly) Mode" feature.

- Adds a `KidModeProvider` to manage the state of Kid Mode.
- Implements a `KidModeCheckbox` widget in the app bar dialog to toggle Kid Mode.
- When Kid Mode is enabled,
  - Disables selecting the multigrid & the bottom bar
  - Removes the top bar from view

Signed-off-by: Sudheer Puthana <Sud-Puth@users.noreply.github.com>

Reverts the changes to devtools_options.yaml file

Signed-off-by: Sudheer Puthana <Sud-Puth@users.noreply.github.com>

refactor: replace Kid Mode with Readonly Mode

This commit replaces the "Kid Mode" feature with a more generic "Readonly Mode".

- Renamed `KidModeProvider` to `ReadonlyModeProvider`.
- Readonly Mode state is now persisted in app settings.
- Added a new app setting `allowUserAvatarOverride` to toggle read-only mode.
- Updated translations.
- Added a message in the app bar dialog indicating when read-only mode is active.

Signed-off-by: Sudheer Puthana <Sud-Puth@users.noreply.github.com>

Address comments -

- Removes the `allowUserAvatarOverride` setting.
- Hides the bottom gallery bar when read-only mode is enabled.
- Adds an icon on the main app bar when read-only mode is enabled with a snackbar.

Signed-off-by: Sudheer Puthana <Sud-Puth@users.noreply.github.com>

Update to snackbar

- When toggling readonly mode from either the settings or the app bar, a snackbar notification will now appear.
- The readonly mode message in the profile drawer has been restyled.
- The upload button in the app bar is now hidden when readonly mode is enabled.

Signed-off-by: Sudheer Puthana <Sud-Puth@users.noreply.github.com>

Removes clearing of snackbar

Signed-off-by: Sudheer Puthana <Sud-Puth@users.noreply.github.com>

Address Comments

- Consolidated snackbar messages for enabling/disabling readonly mode.
- Ensured the "Select All" icon in asset group titles is hidden in readonly mode.

Signed-off-by: Sudheer Puthana <Sud-Puth@users.noreply.github.com>

Adds in the missing translation keys for readonly_mode

Signed-off-by: Sudheer Puthana <Sud-Puth@users.noreply.github.com>

Fix translation

Signed-off-by: Sudheer Puthana <Sud-Puth@users.noreply.github.com>

Fix check failure for BorderRadius

Signed-off-by: Sudheer Puthana <Sud-Puth@users.noreply.github.com>

Changes:
- Adjusted AppBar background color in readonly mode.
- Removes cross-out pencil icon button in favor of above.
- Hides the "Edit" icon next to date/time, disable description and onTap for people and location when readonly mode is enabled.

Signed-off-by: Sudheer Puthana <Sud-Puth@users.noreply.github.com>

Address comments from Alex

- Moved readonly mode check to `GalleryAppBar` to hide the entire `TopControlAppBar` when readonly mode is enabled.
- Changed `toggleReadonlyMode` in `ImmichAppBar` to directly toggle the state.

Signed-off-by: Sudheer Puthana <Sud-Puth@users.noreply.github.com>

migrate readonly mode to new beta timeline

remove readonly mode from legacy UI

only show readonly functionality when on beta timeline

simplify selection icon

update generated provider

chore: more formatting

* fix: bad merge

* chore: use Notifier for readonlyModeProvider

* fix: drag select now honors readonly mode

* fix: disable asset bottom sheet in readonly

* fix: disable editing user icon when in readonly

* chore: remove generated file

* fix: disable tabs instead entire tab bar

This solves the issues with the scrubber

* chore: remove unneeded import

* chore: lint

* remove unused condition in bottomsheet

---------

Co-authored-by: Brandon Wees <brandonwees@gmail.com>
Co-authored-by: Alex <alex.tran1502@gmail.com>

i18n/en.json

@@ -396,6 +396,8 @@
   "advanced_settings_prefer_remote_title": "Prefer remote images",
   "advanced_settings_proxy_headers_subtitle": "Define proxy headers Immich should send with each network request",
   "advanced_settings_proxy_headers_title": "Proxy Headers",
+  "advanced_settings_readonly_mode_subtitle": "Enables the read-only mode where the photos can be only viewed, things like selecting multiple images, sharing, casting, delete are all disabled. Enable/Disable read-only via user avatar from the main screen",
+  "advanced_settings_readonly_mode_title": "Read-only Mode",
   "advanced_settings_self_signed_ssl_subtitle": "Skips SSL certificate verification for the server endpoint. Required for self-signed certificates.",
   "advanced_settings_self_signed_ssl_title": "Allow self-signed SSL certificates",
   "advanced_settings_sync_remote_deletions_subtitle": "Automatically delete or restore an asset on this device when that action is taken on the web",
@@ -1516,6 +1518,7 @@
   "profile_drawer_client_out_of_date_minor": "Mobile App is out of date. Please update to the latest minor version.",
   "profile_drawer_client_server_up_to_date": "Client and Server are up-to-date",
   "profile_drawer_github": "GitHub",
+  "profile_drawer_readonly_mode": "Read-only mode enabled. Double-tap the user avatar icon to exit.",
   "profile_drawer_server_out_of_date_major": "Server is out of date. Please update to the latest major version.",
   "profile_drawer_server_out_of_date_minor": "Server is out of date. Please update to the latest minor version.",
   "profile_image_of_user": "Profile image of {user}",
@@ -1561,6 +1564,8 @@
   "rating_description": "Display the EXIF rating in the info panel",
   "reaction_options": "Reaction options",
   "read_changelog": "Read Changelog",
+  "readonly_mode_disabled": "Read-only mode disabled",
+  "readonly_mode_enabled": "Read-only mode enabled",
   "reassign": "Reassign",
   "reassigned_assets_to_existing_person": "Re-assigned {count, plural, one {# asset} other {# assets}} to {name, select, null {an existing person} other {{name}}}",
   "reassigned_assets_to_new_person": "Re-assigned {count, plural, one {# asset} other {# assets}} to a new person",