#17119 - Initialize work_executor_ and set WorkExecutorMode::SYNCHRON…

…OUS in MeshDevice ctor

 - Solves uninitialized work_executor from MeshDevice::create_submesh()
   calls leading to ND values at runtime and segfault at
   MeshDevice::close() in tt-forge-fe due to tt-metal/2c2110c778

tt_metal/distributed/mesh_device.cpp

@@ -129,6 +129,8 @@ MeshDevice::MeshDevice(
     mesh_id_(generate_unique_mesh_id()),
     parent_mesh_(std::move(parent_mesh)) {
     work_executor_ = std::make_unique<WorkExecutor>(0 /* worker_core */, mesh_id_);
+    work_executor_->initialize();
+    work_executor_->set_worker_mode(WorkExecutorMode::SYNCHRONOUS);
 }
 
 std::shared_ptr<MeshDevice> MeshDevice::create(