[Enhancement] Implement Subfield visitor in ScalarOperatorsReuse

[Jcnessss]

Why I'm doing:

For now, ScalarOperatorsReuse has a lack of a implement of Subfield visitor. So for the sql below, the common expr will be computed multiple times:
select
(
case
when "hero_row.hero_level" < 0 then '10000->-∞0'
when "hero_row.hero_level" >= 0
and "hero_row.hero_level" < 10 then '10001->010'
when "hero_row.hero_level" >= 10
and "hero_row.hero_level" < 20 then '10002->10~20'
else NULL
end
) group_3
from
(
select
CAST(parse_json(hero_row) as row(hero_equipment array, hero_if_support varchar, begin_time datetime, hero_level double, hero_name varchar))."hero_level" "hero_row.hero_level"
from
kudu.t.user_3
)

What I'm doing:

Implement ScalarOperatorRewriter#visitSubfield to make the common operator mechanism works well.

Fixes #issue

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