[Refactor] Fix the clang-tidy check (backport #50950)

[mergify]

Why I'm doing:

What I'm doing:

[ 62%] Building CXX object src/runtime/CMakeFiles/Runtime.dir/runtime_state.cpp.o
/root/starrocks/be/src/storage/lake/pk_tablet_writer.h:59:47: error: private field '_column_to_expr_value' is not used [clang-diagnostic-unused-private-field]
    const std::map<std::string, std::string>* _column_to_expr_value = nullptr;
                                              ^
8444 warnings and 1 error generated.
Error while processing /root/starrocks/be/src/storage/lake/pk_tablet_writer.cpp.
Suppressed 8447 warnings (8440 in non-user code, 3 NOLINT, 4 with check filters).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
Found compiler error(s).

What type of PR is this:

• BugFix
• Feature
• Enhancement
• Refactor
• UT
• Doc
• Tool

Does this PR entail a change in behavior?

• Yes, this PR will result in a change in behavior.
• No, this PR will not result in a change in behavior.

If yes, please specify the type of change:

• Interface/UI changes: syntax, type conversion, expression evaluation, display information
• Parameter changes: default values, similar parameters but with different default values
• Policy changes: use new policy to replace old one, functionality automatically enabled
• Feature removed
• Miscellaneous: upgrade & downgrade compatibility, etc.

Checklist:

• I have added test cases for my bug fix or my new feature
• This pr needs user documentation (for new or modified features or behaviors)
  • I have added documentation for my new feature or new function
• This is a backport pr

Bugfix cherry-pick branch check:

• I have checked the version labels which the pr will be auto-backported to the target branch
  • 3.3
  • 3.2
  • 3.1
  • 3.0
  • 2.5

---

This is an automatic backport of pull request #50950 done by [Mergify](https://mergify.com). ## Why I'm doing:

What I'm doing:

[ 62%] Building CXX object src/runtime/CMakeFiles/Runtime.dir/runtime_state.cpp.o
/root/starrocks/be/src/storage/lake/pk_tablet_writer.h:59:47: error: private field '_column_to_expr_value' is not used [clang-diagnostic-unused-private-field]
    const std::map<std::string, std::string>* _column_to_expr_value = nullptr;
                                              ^
8444 warnings and 1 error generated.
Error while processing /root/starrocks/be/src/storage/lake/pk_tablet_writer.cpp.
Suppressed 8447 warnings (8440 in non-user code, 3 NOLINT, 4 with check filters).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
Found compiler error(s).

What type of PR is this:

• BugFix
• Feature
• Enhancement
• Refactor
• UT
• Doc
• Tool

Does this PR entail a change in behavior?

• Yes, this PR will result in a change in behavior.
• No, this PR will not result in a change in behavior.

If yes, please specify the type of change:

• Interface/UI changes: syntax, type conversion, expression evaluation, display information
• Parameter changes: default values, similar parameters but with different default values
• Policy changes: use new policy to replace old one, functionality automatically enabled
• Feature removed
• Miscellaneous: upgrade & downgrade compatibility, etc.

Checklist:

• I have added test cases for my bug fix or my new feature
• This pr needs user documentation (for new or modified features or behaviors)
  • I have added documentation for my new feature or new function
• This is a backport pr