Add tests for UpdateWorkflowExecution

[Shaddoll]

What changed?

• Add tests for UpdateWorkflowExecution
• Remove code related to async transaction in UpdateWorkflowExecution because it's not needed (the code was never launched in production)

Why?
Improve test coverage

How did you test it?
unit tests

Potential risks

Release notes

Documentation Changes

[taylanisikdemir]

thanks for cleanup

[coveralls]

Pull Request Test Coverage Report for Build 018e1016-92dc-4e10-8dd3-6e9adf24ad8e

Details

• 13 of 13 (100.0%) changed or added relevant lines in 1 file are covered.
• 60 unchanged lines in 11 files lost coverage.
• Overall coverage decreased (-0.003%) to 63.101%

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Files with Coverage Reduction	New Missed Lines	%
common/peerprovider/ringpopprovider/config.go	2	81.58%
common/task/weighted_round_robin_task_scheduler.go	2	89.05%
service/history/execution/mutable_state_util.go	2	37.63%
service/history/shard/context.go	2	66.67%
service/history/task/transfer_standby_task_executor.go	2	87.42%
common/persistence/sql/common.go	3	89.61%
common/persistence/sql/sqlplugin/mysql/db.go	3	79.49%
common/persistence/sql/sqlplugin/postgres/db.go	3	80.0%
service/history/task/transfer_active_task_executor.go	4	72.38%
common/persistence/sql/workflowStateMaps.go	8	81.25%

Totals
Change from base Build 018e0fff-ed52-48fd-a049-78d902657a34:	-0.003%
Covered Lines:	92547
Relevant Lines:	146664

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💛 - Coveralls