dumpling: precheck log file permisssion (#61101)#61102

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ti-chi-bot[bot] merged 2 commits intopingcap:release-8.5from

ti-chi-bot:cherry-pick-61101-to-release-8.5

May 15, 2025

Commits on May 14, 2025

This is an automated cherry-pick of #61101

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