optimize Feat/checkpoint speedup

[sgz13140]

Description

1. if CalcCheckpointTimeout returns error then return false in checkIfNoAckIsRequired function
2. don't check CheckpointPollInterval in Validate()
3. remove unreachable "return" in GetCheckpointParamsWithRetry function

Changes

• Bugfix (non-breaking change that solves an issue)
• Hotfix (change that solves an urgent issue, and requires immediate attention)
• New feature (non-breaking change that adds functionality)
• Breaking change (change that is not backwards-compatible and/or changes current functionality)

Breaking changes

Checklist

• I have added at least 1 reviewer to this PR
• I have added sufficient documentation in code
• I will be resolving comments - if any - by pushing each fix in a separate commit and linking the commit hash in the comment reply

Testing

• I have added unit tests
• I have added tests to CI
• I have tested this code manually on local environment
• I have tested this code manually on remote devnet

Manual tests

Please complete this section with the steps you performed if you ran manual tests for this functionality, otherwise delete it

Additional comments

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