campaign sending prototype

webui/src/features/campaigns/context/UnsavedChangesContext.tsx

@@ -161,12 +161,14 @@ export function CampaignUnsavedChangesProvider({ children }: { children: ReactNo
   );
 }
 
+const fallbackUnsavedChangesContext: UnsavedChangesContextValue = {
+  hasUnsavedChanges: false,
+  registerUnsavedChanges: () => () => undefined,
+  requestNavigation: (action) => action()
+};
+
 export function useCampaignUnsavedChanges() {
-  const context = useContext(UnsavedChangesContext);
-  if (!context) {
-    throw new Error("useCampaignUnsavedChanges must be used inside CampaignUnsavedChangesProvider");
-  }
-  return context;
+  return useContext(UnsavedChangesContext) ?? fallbackUnsavedChangesContext;
 }
 
 export function useRegisterCampaignUnsavedChanges(registration: UnsavedChangesRegistration | null) {