feat(web): Remove from Stack (#19703)

* - add component
- update server's StackCreateDto for merge parameter
- Update stackRepo to only merge stacks when merge=true (default)
- update web action handlers to show stack changes

* - make open-api

* lint & format

* - Add proper icon to 'remove from stack'
- change web unstack icon to image-off-outline

* - cleanup

* - format & lint

* - make open-api: StackCreateDto merge optional

* initial addition of new endpoint

* remove stack endpoint

* - fix up remove stack endpoint
- open-api

* - Undo stackCreate merge parameter

* - open-api typescript

* open-api dart

* Tests:
- add tests
- update assetStub.imageFrom2015 to have required stack attributes to include it with tests

* update event name

* Fix event name in test

* remove asset_update check

* - merge stack.removeAsset params into one object
- refactor asset existence check (no need for asset fetch)
- fix tests

* Don't return updated stack

* Create specialized stack id & primary asset fetch for asset removal checks

* Correct new permission names

* make sql

* - fix open-api

* - cleanup

web/src/lib/components/photos-page/actions/stack-action.svelte

@@ -4,7 +4,7 @@
   import type { OnStack, OnUnstack } from '$lib/utils/actions';
   import { deleteStack, stackAssets } from '$lib/utils/asset-utils';
   import { toTimelineAsset } from '$lib/utils/timeline-util';
-  import { mdiImageMinusOutline, mdiImageMultipleOutline } from '@mdi/js';
+  import { mdiImageMultipleOutline, mdiImageOffOutline } from '@mdi/js';
   import { t } from 'svelte-i18n';
 
   interface Props {
@@ -42,7 +42,7 @@
 </script>
 
 {#if unstack}
-  <MenuOption text={$t('unstack')} icon={mdiImageMinusOutline} onClick={handleUnstack} />
+  <MenuOption text={$t('unstack')} icon={mdiImageOffOutline} onClick={handleUnstack} />
 {:else}
   <MenuOption text={$t('stack')} icon={mdiImageMultipleOutline} onClick={handleStack} />
 {/if}