planner: fix wrong schema when to solve the schema name in CTE (#57253)

[ti-chi-bot]

This is an automated cherry-pick of #57253

What problem does this PR solve?

Issue Number: close #54582

Problem Summary:

What changed and how does it work?

when to adjustCTEPlanOutputName, we will force the current db name as the query schema. but it is the root cause. sometime query will set specific schema name. we must follow this name to get meta.

Check List

Tests

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

  • I checked and no code files have been changed.

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.

fix wrong schema when to solve the schema name in CTE

修复在CTE中解析数据库名时，得到错误的数据库名

[ti-chi-bot]

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@ti-chi-bot: The following tests failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
idc-jenkins-ci-tidb/unit-test	878e48a	link	true	/test unit-test
idc-jenkins-ci-tidb/build	878e48a	link	true	/test build
idc-jenkins-ci-tidb/check_dev_2	878e48a	link	true	/test check-dev2
idc-jenkins-ci-tidb/check_dev	878e48a	link	true	/test check-dev
idc-jenkins-ci-tidb/mysql-test	878e48a	link	true	/test mysql-test

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