Update parent close policy to terminate/cancel child workflows even after continue as new

[Shaddoll]

What changed?
this picks temporalio/temporal#696
and partially picks temporalio/temporal#365

Why?
see the 2 cherry picks

How did you test it?
Tested by terminating childworkflow

Potential risks

Release notes

Documentation Changes

[coveralls]

Pull Request Test Coverage Report for Build 0184bf78-5739-40a2-b514-281ebfd1fbfc

• 76 of 106 (71.7%) changed or added relevant lines in 6 files are covered.
• 76 unchanged lines in 10 files lost coverage.
• Overall coverage increased (+0.02%) to 57.284%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
common/types/shared.go	8	10	80.0%
service/worker/parentclosepolicy/workflow.go	0	5	0.0%
service/history/historyEngine.go	14	37	37.84%

Files with Coverage Reduction	New Missed Lines	%
service/history/execution/mutable_state_builder.go	2	68.79%
service/history/task/transfer_standby_task_executor.go	2	87.24%
common/util.go	2	52.54%
common/task/weightedRoundRobinTaskScheduler.go	2	89.64%
service/matching/taskListManager.go	3	76.37%
common/persistence/nosql/nosqlplugin/cassandra/workflow.go	3	60.0%
common/task/fifoTaskScheduler.go	4	80.41%
service/history/execution/mutable_state_task_refresher.go	7	62.34%
common/persistence/nosql/nosqlplugin/cassandra/workflowParsingUtils.go	19	86.13%
common/persistence/nosql/nosqlplugin/cassandra/workflowUtils.go	32	74.27%

Totals
Change from base Build 0184a65d-80f0-4061-b094-4c25418ca876:	0.02%
Covered Lines:	85173
Relevant Lines:	148685

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💛 - Coveralls

[mindaugasbarcauskas]

Looks good.