[Bug] Local activity markers might create commands after workflow completion

[Sushisource]

This manifests like

2023-12-14T17:56:20.923613Z  WARN temporal_sdk_core::worker::workflow: Error while completing workflow activation error=status: InvalidArgument, message: "invalid command sequence: [StartTimer, CompleteWorkflowExecution, RecordMarker], command CompleteWorkflowExecution must be the last command.", details: [], metadata: MetadataMap { headers: {"content-type": "application/grpc"} }

90% sure LAs are completing after the fact and we're adding the command when we should just be discarding it

• When fixed, note in fuzzy trophy case