[Bug] Missing Local Activites should fail WFT rather than retry-looping

[Sushisource]

Describe the bug

Right now if an LA is invoked that doesn't exist, it will just retry at the activity level which doesn't make sense and will never work. It should fail the WFT. See temporalio/features#221

Minimal Reproduction

@workflow.defn
class MissingLocalActivityWorkflow:
    @workflow.run
    async def run(self, name: str) -> str:
        return await workflow.execute_local_activity(
            "whatever", name, schedule_to_close_timeout=timedelta(seconds=5)
        )


async def test_workflow_missing_local_activity(client: Client):
    async with new_worker(
        client, MissingLocalActivityWorkflow, activities=[say_hello]
    ) as worker:
        result = await client.execute_workflow(
            MissingLocalActivityWorkflow.run,
            "Temporal",
            id=f"workflow-{uuid.uuid4()}",
            task_queue=worker.task_queue,
        )
        assert result == "Hello, Temporal!"