🐛 fix(ShareModal): wrap ShareMessageModal with Provider in context menu (#11434)

When sharing a message via context menu, the ShareMessageModal was not
wrapped with the Conversation store Provider, causing "zustand provider
not used as ancestor" error when useConversationStore was called.

This fix adds the Provider wrapper consistent with other Actions
components (Assistant/Actions, Task/Actions, etc.) that use the share
modal.

Fixes #11382

Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>

src/features/Conversation/hooks/useChatItemContextMenu.tsx

@@ -18,8 +18,10 @@ import { sessionSelectors } from '@/store/session/selectors';
 import { useUserStore } from '@/store/user';
 import { userGeneralSettingsSelectors } from '@/store/user/selectors';
 
-import ShareMessageModal from '../components/ShareMessageModal';
+import ShareMessageModal, { type ShareModalProps } from '../components/ShareMessageModal';
 import {
+  Provider,
+  createStore,
   dataSelectors,
   messageStateSelectors,
   useConversationStore,
@@ -187,13 +189,26 @@ export const useChatItemContextMenu = ({
     if (!item || item.role !== 'assistant') return;
 
     createRawModal(
-      ShareMessageModal,
+      (props: ShareModalProps) => (
+        <Provider
+          createStore={() => {
+            const state = storeApi.getState();
+            return createStore({
+              context: state.context,
+              hooks: state.hooks,
+              skipFetch: state.skipFetch,
+            });
+          }}
+        >
+          <ShareMessageModal {...props} />
+        </Provider>
+      ),
       {
         message: item,
       },
       { onCloseKey: 'onCancel', openKey: 'open' },
     );
-  }, [getMessage]);
+  }, [getMessage, storeApi]);
 
   const handleAction = useCallback(
     async (action: ContextMenuEvent) => {