ddl: treat the gc too early error retryable while adding index

[tangenta]

What problem does this PR solve?

Issue Number: close #40074

Problem Summary:

The txns created by DDL are not aware by the GC safepoint updater. Moreover, the txns created by adding index are usually large and it takes for a while to run.

What is changed and how it works?

To make the risk under control, this PR treats these error as retryable so that it won't fallback to the txn-merge mode.

Check List

Tests

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

Side effects

• Performance regression: Consumes more CPU
• Performance regression: Consumes more Memory
• Breaking backward compatibility

Documentation

• Affects user behaviors
• Contains syntax changes
• Contains variable changes
• Contains experimental features
• Changes MySQL compatibility

Release note

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

None

[ti-chi-bot]

[REVIEW NOTIFICATION]

This pull request has been approved by:

• Benjamin2037
• hawkingrei

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[Benjamin2037]

LGTM

[tangenta]

/merge

[ti-chi-bot]

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

Commit hash: a75d1cc

[ti-chi-bot]

@tangenta: Your PR was out of date, I have automatically updated it for you.

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[tangenta]

/hold