disable agg function in unwind clause

[nevermore3]

What type of PR is this?

• bug
• feature
• enhancement

What does this PR do?

refer to https://discuss.nebula-graph.com.cn/t/topic/6742/8

Which issue(s)/PR(s) this PR relates to?

Special notes for your reviewer, ex. impact of this fix, etc:

Additional context:

Checklist：

• Documentation affected （Please add the label if documentation needs to be modified.)
• Incompatible （If it is incompatible, please describe it and add corresponding label.）
• Need to cherry-pick （If need to cherry-pick to some branches, please label the destination version(s).)
• Performance impacted: Consumes more CPU/Memory

Release notes：

Please confirm whether to reflect in release notes and how to describe:

                                                            `

[yixinglu]

Could you test the scenario which use aggregation function in WITH ?

[codecov-commenter]

Codecov Report

Merging #3397 (7cb24f9) into master (6ccf173) will increase coverage by 0.05%.
The diff coverage is 84.87%.

@@            Coverage Diff             @@
##           master    #3397      +/-   ##
==========================================
+ Coverage   85.25%   85.30%   +0.05%     
==========================================
  Files        1278     1289      +11     
  Lines      119277   119820     +543     
==========================================
+ Hits       101688   102213     +525     
- Misses      17589    17607      +18     

Impacted Files	Coverage Δ
src/clients/storage/StorageClient.h	100.00% <ø> (ø)
src/common/graph/Response.h	45.66% <ø> (ø)
src/common/meta/SchemaManager.h	50.00% <ø> (ø)
src/graph/context/ast/CypherAstContext.h	100.00% <ø> (ø)
src/graph/planner/plan/PlanNode.h	81.25% <ø> (ø)
src/graph/visitor/ExtractFilterExprVisitor.cpp	50.46% <36.36%> (-18.29%)	⬇️
src/clients/storage/StorageClient.cpp	78.60% <50.00%> (+6.62%)	⬆️
src/graph/validator/GoValidator.cpp	96.25% <72.72%> (-0.94%)	⬇️
.../optimizer/rule/PushFilterDownScanVerticesRule.cpp	73.91% <73.91%> (ø)
src/kvstore/raftex/RaftPart.cpp	72.46% <83.33%> (-0.09%)	⬇️
... and 63 more

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[nevermore3]

Could you test the scenario which use aggregation function in WITH ?

ok

[yixinglu]

LGTM