ddl: fix ddl hang over when it meets panic in cancelling path (#23204) #23298
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cherry-pick #23204 to release-5.0-rc
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# In tidb repo: git pr https://github.com/pingcap/tidb/pull/23298
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Signed-off-by: ailinkid 314806019@qq.com
What problem does this PR solve?
Issue Number: close #23202
What is changed and how it works?
What's Changed:
record the error count when the goroutine restored from panic.
Check List
Tests
Release note