planner: fix the problem of using enum like 'x%' to build the wrong range (#27267)

[ti-srebot]

cherry-pick #27267 to release-5.2
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# In tidb repo:
git pr https://github.com/pingcap/tidb/pull/27289

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---

What problem does this PR solve?

Issue Number: close #27130

Problem Summary:

We used enum like 'x%' to build the wrong range. In fact, we do not support the use of enum like 'x%' as access condition of IndexReader.

What is changed and how it works?

Let enum like 'x%' be filter condition of IndexReader.

Proposal: xxx

What's Changed:

How it Works:

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

planner: fix the problem of using `enum like 'x%'` to build the wrong range

[ti-chi-bot]

[REVIEW NOTIFICATION]

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• Reminiscent
• qw4990

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[ti-srebot]

/run-all-tests

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[rebelice]

/merge

[ti-chi-bot]

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

Commit hash: dbe63aa

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/run-check_dev

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/merge

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/merge

[ti-chi-bot]

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

Commit hash: df3b2d5

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