Child workflow cancellation can trigger SDK event loop without a WFT Started

[Quinn-With-Two-Ns]

Expected Behavior

Child workflow cancellation would not trigger the event loop without a WFT Started

Actual Behavior

Child workflow cancellation can trigger SDK event loop without a WFT Started

Steps to Reproduce the Problem

see: #2155

sdk-java/temporal-sdk/src/main/java/io/temporal/internal/statemachines/WorkflowStateMachines.java

Line 884 in eabd51f

eventLoop();

Fixing this would be a non deterministic change so we will need to version this change.