Confusing span fields in state_machine::utils::apply_command

[tillrohrmann]

Some of the state_machine::utils::apply_command span fields are confusing since they appear multiple times. For example, restate.invocation.id, rpc.method, restate.invocation.target appear twice in the log output message below.

2025-03-10T12:36:11.211955Z DEBUG restate_worker::partition::state_machine
  Invoke inboxed
    rpc.service: KillTestSingleton/c735fb3a-4e2c-44dd-9d42-ad9c932eb107
on rt:pp-3
  in restate_worker::partition::state_machine::utils::apply_command
    otel.name: "apply-command: InvokerEffect"
    restate.state_machine.command: InvokerEffect(Effect { invocation_id: InvocationId { partition_key: 2691971143059952921, inner: InvocationUuid(2105477499437878611799103406223967318) }, kind: Failed(InvocationError { code: 409 Aborted, message: "killed", stacktrace: None }) }) 
    restate.invocation.id: inv_12dw5UBHriBL2DJ0pgfNmE46yAptW2rrMJ 
    restate.invocation.target: KillTestSingleton/c735fb3a-4e2c-44dd-9d42-ad9c932eb107/recursiveCall 
    rpc.service: KillTestSingleton 
    rpc.method: recursiveCall 
    restate.invocation.id: inv_12dw5UBHriBL6zDR4IfF2Ev9TdQHvK6rsZ 
    restate.invocation.target: KillTestSingleton/c735fb3a-4e2c-44dd-9d42-ad9c932eb107/recursiveCall 
    rpc.service: KillTestSingleton 
    rpc.method: recursiveCall
  in restate_worker::partition::run
    partition_id: 3

@slinkydeveloper should the first set of fields be the caller information?