[Enhancement] support memory estimation of array_agg and group_concat state

[silverbullet233]

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Why I'm doing:

What I'm doing:

This is a part of #48195 follow-up work, In this PR, I support memory estimation of array_agg and group_concat. These two states are somewhat similar, as they maintain their state internally through Columns.

Currently, the cost of obtaining the memory usage of a certain Column is very high, and we need to balance performance and memory statistics accuracy.

considering that these two functions just aggregates data into Column, does not perform deduplication operations, I directly use the size of the input column to estimate memory changes.

In the future, if our Column becomes an allocator aware structure, we can obtain memory usage at a very low cost.

What type of PR is this:

• [ ] BugFix
• [ ] Feature
• [x] Enhancement
• [ ] Refactor
• [ ] UT
• [ ] Doc
• [ ] Tool

Does this PR entail a change in behavior?

• [ ] Yes, this PR will result in a change in behavior.
• [x] 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:

• [x] 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

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[Java-Extensions Incremental Coverage Report]

:white_check_mark: pass : 0 / 0 (0%)

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[FE Incremental Coverage Report]

:white_check_mark: pass : 0 / 0 (0%)

[github-actions[bot]]

[BE Incremental Coverage Report]

:x: fail : 39 / 56 (69.64%)

file detail

	path	covered_line	new_line	coverage	not_covered_line_detail
:large_blue_circle:	be/src/exprs/agg/array_agg.h	19	28	67.86%	[192, 227, 228, 229, 232, 233, 234, 236, 265]
:large_blue_circle:	be/src/exprs/agg/group_concat.h	17	25	68.00%	[315, 329, 330, 331, 332, 333, 336, 394]
:large_blue_circle:	be/src/exprs/function_context.h	2	2	100.00%	[]
:large_blue_circle:	be/src/exec/aggregator.cpp	1	1	100.00%	[]