Support migrate workflow from not using persistence caching to use caching

Currently the flag is set at workflow start, and store as a flag in persistence component.

Later when workflow definition enabling caching will not affect the existing workflow execution.

But ideally we should changing the definition should affect existing workflow execution as well

Start by tracing where the caching flag is set at workflow start and stored in the persistence component. Determine how workflow definition changes can affect existing executions, then verify that enabling caching after an execution starts produces the intended behavior.

Written by the indexing model from the issue text.