replay: filter audit log by the time in filename

[YangKeao]

What problem does this PR solve?

Issue Number: close #883

Problem Summary:

What is changed and how it works:

Filter the file according to the argument command-start-time.

Check List

Tests

• Unit test
• Integration test
• Manual test (add detailed scripts or steps below)
• No code

Notable changes

• Has configuration change
• Has HTTP API interfaces change
• Has tiproxyctl change
• Other user behavior changes

Release note

Please refer to Release Notes Language Style Guide to write a quality release note.

None

[codecov-commenter]

Codecov Report

❌ Patch coverage is 96.55172% with 1 line in your changes missing coverage. Please review.
⚠️ Please upload report for BASE (main@2ba3842). Learn more about missing BASE report.

Files with missing lines	Patch %	Lines
pkg/sqlreplay/replay/replay.go	0.00%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #885   +/-   ##
=======================================
  Coverage        ?   67.44%           
=======================================
  Files           ?      133           
  Lines           ?    12885           
  Branches        ?        0           
=======================================
  Hits            ?     8690           
  Misses          ?     3597           
  Partials        ?      598           

Flag	Coverage Δ
unit	67.44% <96.55%> (?)

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[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: djshow832

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• OWNERS [djshow832]

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2025-09-14 13:09:35.057885269 +0000 UTC m=+798841.617766756: ☑️ agreed by djshow832.