update the default value of stmt_max_count

[djshow832]

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What is changed, added or deleted? (Required)

Update the default value of max-stmt-count.
Notice: the value in statement-summary-tables.md has already been changed.

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[ti-chi-bot]

[REVIEW NOTIFICATION]

This pull request has been approved by:

• TomShawn
• crazycs520

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[TomShawn]

/merge

[ti-chi-bot]

This pull request has been accepted and is ready to merge.

Commit hash: 418a645