feat: show stacks in asset viewer (#19935)

* feat: show stacks in asset viewer

* fix: global key issue and flash on stack asset change

* feat(mobile): stack and unstack action (#19941)

* feat(mobile): stack and unstack action

* add custom model

* use stackId from ActionSource

* Update mobile/lib/providers/infrastructure/action.provider.dart

Co-authored-by: shenlong <139912620+shenlong-tanwen@users.noreply.github.com>

---------

Co-authored-by: shenlong <139912620+shenlong-tanwen@users.noreply.github.com>

* fix: lint

* fix: bad merge

* fix: test

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Co-authored-by: shenlong-tanwen <139912620+shalong-tanwen@users.noreply.github.com>
Co-authored-by: Alex <alex.tran1502@gmail.com>
Co-authored-by: Daimolean <92239625+wuzihao051119@users.noreply.github.com>
Co-authored-by: wuzihao051119 <wuzihao051119@outlook.com>

i18n/en.json

@@ -1795,6 +1795,7 @@
   "sort_title": "Title",
   "source": "Source",
   "stack": "Stack",
+  "stack_action_prompt": "{count} stacked",
   "stack_duplicates": "Stack duplicates",
   "stack_select_one_photo": "Select one main photo for the stack",
   "stack_selected_photos": "Stack selected photos",
@@ -1905,6 +1906,7 @@
   "unselect_all_duplicates": "Unselect all duplicates",
   "unselect_all_in": "Unselect all in {group}",
   "unstack": "Un-stack",
+  "unstack_action_prompt": "{count} unstacked",
   "unstacked_assets_count": "Un-stacked {count, plural, one {# asset} other {# assets}}",
   "untagged": "Untagged",
   "up_next": "Up next",