Update view when view attachments are modified (#8745)

Author: pmconne

common/api/core-frontend.api.md

@@ -9855,7 +9855,7 @@ export class SheetViewState extends ViewState2d {
     // (undocumented)
     get areAllTileTreesLoaded(): boolean;
     // (undocumented)
-    get attachmentIds(): Id64Array;
+    get attachmentIds(): readonly string[];
     // @internal
     get attachments(): object[] | undefined;
     attachToViewport(args: AttachToViewportArgs): void;
@@ -9894,6 +9894,7 @@ export class SheetViewState extends ViewState2d {
     isDrawingView(): this is DrawingViewState;
     // (undocumented)
     isSheetView(): this is SheetViewState;
+    readonly onViewAttachmentsReloaded: BeEvent<() => void>;
     // @internal (undocumented)
     protected postload(hydrateResponse: HydrateViewStateResponseProps): Promise<void>;
     // @internal (undocumented)
@@ -9904,7 +9905,7 @@ export class SheetViewState extends ViewState2d {
     // (undocumented)
     toProps(): ViewStateProps;
     // @internal
-    get viewAttachmentInfos(): Id64Array | Array<{
+    get viewAttachmentInfos(): readonly Id64String[] | Array<{
         attachedView: ViewState;
     }>;
     // @internal

common/changes/@itwin/core-frontend/pmc-react-to-view-attachment-changes_2025-11-10-16-06.json

@@ -0,0 +1,10 @@
+{
+  "changes": [
+    {
+      "packageName": "@itwin/core-frontend",
+      "comment": "Update view when view attachment elements are modified.",
+      "type": "none"
+    }
+  ],
+  "packageName": "@itwin/core-frontend"
+}