after we use time.Ticker it didn't allow to have 0 time duration

[liam-lai]

Proposed changes

Related to #400
After we use time.Ticker it didn't allow to have 0 time duration. When we call eth_getLogs it panics and crash the nodes, change to non 0 will resolve this issue

Thanks @gzliudan for finding the root cause.

Error Log:

Types of changes

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• Bugfix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
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• Regular KTLO or any of the maintaince work. e.g code style
• CICD Improvement

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• Consensus
• Account
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• Geth
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Checklist

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• This PR has sufficient test coverage (unit/integration test) OR I have provided reason in the PR description for not having test coverage
• Provide an end-to-end test plan in the PR description on how to manually test it on the devnet/testnet.
• Tested the backwards compatibility.
• Tested with XDC nodes running this version co-exist with those running the previous version.
• Relevant documentation has been updated as part of this PR
• N/A
  Too complicate to write unit test, will do the test on devnet while calling eth_getLogs api.