ttl: add methods to split ttl scan tasks (#39627)

[ti-chi-bot]

This is an automated cherry-pick of #39627

What problem does this PR solve?

Issue Number: close #39626

What is changed and how it works?

• The scan range defined to [start, end) , so modified some implements of sql builder
• Split scan tasks for table with int or binary primary key

For implement detail, the PR takes some considerations with:

• The region cannot grantee its start/end key is a legal format for table row: *: insufficient bytes decode value reported when adding index for some split common-handled tables.  #20727. So this PR does some works to parse a legal value of the region edges.
• When a int handle is unsigned, and if a range is across negative and positive values, we should split this range to two ranges.

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:

• YangKeao
• hawkingrei

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[YangKeao]

LGTM

[hawkingrei]

/merge

[ti-chi-bot]

@hawkingrei: /merge in this pull request requires 2 approval(s).

In response to this:

/merge

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[hawkingrei]

/merge

[ti-chi-bot]

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

Commit hash: 9940054

[ti-chi-bot]

@ti-chi-bot: Your PR was out of date, I have automatically updated it for you.

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