Add overload for `WorkflowStub.cancel` to target exact workflow execution

[Quinn-With-Two-Ns]

Is your feature request related to a problem? Please describe.

When I call WorkflowStub.cancel I want to only target the workflow execution I used to create the stub and not the latest workflow.

Describe the solution you'd like

Add overload for WorkflowStub.cancel to target exact workflow execution instead of the latest workflow ID/execution chain

Describe alternatives you've considered

We could also look at setting first_execution_run_id, need to verify if it is properly implemented for cancel.

Additional context

We need to add an appropriate note/warning to this overload since targeting such a specific run can be flaky when using things like continue as new.