Add unit tests for ContinueAsNewWorkflowExecutionParameters

[Shaddoll]

What changed?

• Add unit tests for ContinueAsNewWorkflowExecutionParameters
• Fix some bugs in ContinueAsNewWorkflowExecutionParameters

Why?
improve unit test coverage

How did you test it?
unit tests

Potential risks

Release notes

Documentation Changes

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 73.69%. Comparing base (6d76d41) to head (5dafc0b).
Report is 3 commits behind head on master.

Additional details and impacted files

Files with missing lines	Coverage Δ
...play/ContinueAsNewWorkflowExecutionParameters.java	100.00% <100.00%> (+57.89%)	⬆️

... and 8 files with indirect coverage changes

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[coveralls]

Pull Request Test Coverage Report for Build 2627

Details

• 3 of 3 (100.0%) changed or added relevant lines in 1 file are covered.
• 6 unchanged lines in 2 files lost coverage.
• Overall coverage increased (+0.09%) to 79.596%

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Files with Coverage Reduction	New Missed Lines	%
src/main/java/com/uber/cadence/internal/sync/CancellationScopeImpl.java	1	92.65%
src/main/java/com/uber/cadence/internal/replay/ReplayDecider.java	5	80.27%

Totals
Change from base Build 2625:	0.09%
Covered Lines:	15440
Relevant Lines:	19398

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💛 - Coveralls