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/asset-grid.svelte

@@ -523,6 +523,23 @@
         updateUnstackedAssetInTimeline(timelineManager, action.assets);
         break;
       }
+      case AssetAction.REMOVE_ASSET_FROM_STACK: {
+        timelineManager.addAssets([toTimelineAsset(action.asset)]);
+        if (action.stack) {
+          //Have to unstack then restack assets in timeline in order to update the stack count in the timeline.
+          updateUnstackedAssetInTimeline(
+            timelineManager,
+            action.stack.assets.map((asset) => toTimelineAsset(asset)),
+          );
+          updateStackedAssetInTimeline(timelineManager, {
+            stack: action.stack,
+            toDeleteIds: action.stack.assets
+              .filter((asset) => asset.id !== action.stack?.primaryAssetId)
+              .map((asset) => asset.id),
+          });
+        }
+        break;
+      }
       case AssetAction.SET_STACK_PRIMARY_ASSET: {
         //Have to unstack then restack assets in timeline in order for the currently removed new primary asset to be made visible.
         updateUnstackedAssetInTimeline(