SpringBoot - setting target to "local" does not register ServiceStubOptionsTemplate

[tsurdilo]

When using springboot config in local env users are told to set target prop to "local", this however just creates

WorkflowServiceStubs.newLocalServiceStubs();

see https://github.com/temporalio/sdk-java/blob/master/temporal-spring-boot-autoconfigure-alpha/src/main/java/io/temporal/spring/boot/autoconfigure/template/ServiceStubsTemplate.java#L69-L71

We should either change this to also use ServiceStubOptionsTemplate or document that when using local things like
metricsScope would not be registered.