refactor(web): migrate isFaceEditMode from standalone store to assetViewerManager (#27307)

web/src/lib/managers/asset-viewer-manager.svelte.ts

@@ -42,7 +42,7 @@ class AssetViewerManager extends BaseEventManager<Events> {
   isShowActivityPanel = $state(false);
   isPlayingMotionPhoto = $state(false);
   isShowEditor = $state(false);
-
+  #isFaceEditMode = $state(false);
   #viewingAssetStoreState = $state<AssetResponseDto>();
   #viewState = $state<boolean>(false);
   gridScrollTarget = $state<AssetGridRouteSearchParams | null | undefined>();
@@ -63,6 +63,10 @@ class AssetViewerManager extends BaseEventManager<Events> {
     return isShowDetailPanel.current;
   }
 
+  get isFaceEditMode() {
+    return this.#isFaceEditMode;
+  }
+
   get zoomState() {
     return this.#zoomState;
   }
@@ -161,6 +165,14 @@ class AssetViewerManager extends BaseEventManager<Events> {
     this.isShowEditor = false;
   }
 
+  toggleFaceEditMode() {
+    this.#isFaceEditMode = !this.#isFaceEditMode;
+  }
+
+  closeFaceEditMode() {
+    this.#isFaceEditMode = false;
+  }
+
   setAsset(asset: AssetResponseDto) {
     this.#viewingAssetStoreState = asset;
     this.#viewState = true;