planner: fix the usage of ParamMaker in BatchPointGet

[qw4990]

What problem does this PR solve?

Issue Number: ref #31056

Problem Summary: planner: fix the usage of ParamMaker in BatchPointGet

What is changed and how it works?

The following PR of #32235, no logical change, just refactor that replacing ParamMaker with Constant in BatchPointGet to make it safer.

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

None

[ti-chi-bot]

[REVIEW NOTIFICATION]

This pull request has been approved by:

• Reminiscent
• rebelice

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[qw4990]

/run-unit-test

[sre-bot]

Code Coverage Details: https://codecov.io/github/pingcap/tidb/commit/5e9370508791a2fb29a48f14addefe3c46390a44

[qw4990]

We triggered Plan Cache PointGet Random Testing again and no regression was found.

[qw4990]

/merge

[ti-chi-bot]

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

Commit hash: cf1793f