fix: bind filterDescendantAgentTaskIds in task_await

Change-Id: Icfab3a441e0dc7979e720a84468a2905b2255a19
Signed-off-by: Thomas Kosiewski <tk@coder.com>

Author: ThomasK33

src/node/services/tools/task_await.ts

@@ -44,7 +44,7 @@ export const createTaskAwaitTool: ToolFactory = (config: ToolConfiguration) => {
       ).filterDescendantAgentTaskIds;
       const descendantTaskIdSet = new Set(
         typeof bulkFilter === "function"
-          ? bulkFilter(workspaceId, uniqueTaskIds)
+          ? bulkFilter.call(taskService, workspaceId, uniqueTaskIds)
           : uniqueTaskIds.filter((taskId) => taskService.isDescendantAgentTask(workspaceId, taskId))
       );