Don't include workflow_id in uws update interceptor input

Author: dandavison

temporalio/client.py

@@ -976,7 +976,6 @@ async def _start_update_with_start(
             update_name = str(update)
 
         update_input = UpdateWithStartUpdateWorkflowInput(
-            id=start_workflow_operation._start_workflow_input.id,
             update_id=id,
             update=update_name,
             args=temporalio.common._arg_or_args(arg, args),
@@ -5082,7 +5081,6 @@ class StartWorkflowUpdateInput:
 class UpdateWithStartUpdateWorkflowInput:
     """Update input for :py:meth:`OutboundInterceptor.start_workflow_update_with_start`."""
 
-    id: str
     update_id: Optional[str]
     update: str
     args: Sequence[Any]
@@ -5779,7 +5777,8 @@ async def terminate_workflow(self, input: TerminateWorkflowInput) -> None:
     async def start_workflow_update(
         self, input: StartWorkflowUpdateInput
     ) -> WorkflowUpdateHandle[Any]:
-        req = await self._build_update_workflow_execution_request(input)
+        workflow_id = input.id
+        req = await self._build_update_workflow_execution_request(input, workflow_id)
         # Repeatedly try to invoke UpdateWorkflowExecution until the update reaches user-provided
         # wait stage or is at least ACCEPTED (as of the time of this writing,
         # the user cannot specify sooner than ACCEPTED)
@@ -5813,7 +5812,7 @@ async def start_workflow_update(
         handle: WorkflowUpdateHandle[Any] = WorkflowUpdateHandle(
             client=self._client,
             id=req.request.meta.update_id,
-            workflow_id=input.id,
+            workflow_id=workflow_id,
             # TODO: Why don't we use the run ID from the update response here?
             workflow_run_id=input.run_id,
             result_type=input.ret_type,
@@ -5827,12 +5826,13 @@ async def start_workflow_update(
     async def _build_update_workflow_execution_request(
         self,
         input: Union[StartWorkflowUpdateInput, UpdateWithStartUpdateWorkflowInput],
+        workflow_id: str,
     ) -> temporalio.api.workflowservice.v1.UpdateWorkflowExecutionRequest:
         run_id = input.run_id if isinstance(input, StartWorkflowUpdateInput) else None
         req = temporalio.api.workflowservice.v1.UpdateWorkflowExecutionRequest(
             namespace=self._client.namespace,
             workflow_execution=temporalio.api.common.v1.WorkflowExecution(
-                workflow_id=input.id,
+                workflow_id=workflow_id,
                 run_id=run_id or "",
             ),
             request=temporalio.api.update.v1.Request(
@@ -5872,7 +5872,9 @@ async def start_workflow_update_with_start(
                 start_input
             )
         )
-        update_req = await self._build_update_workflow_execution_request(update_input)
+        update_req = await self._build_update_workflow_execution_request(
+            update_input, workflow_id=start_input.id
+        )
         multiop_req = temporalio.api.workflowservice.v1.ExecuteMultiOperationRequest(
             namespace=self._client.namespace,
             operations=[