feat(streaming): split chunks in hash agg

[pleiadesian]

What's changed and what's your intention?

As title.

Checklist

• I have written necessary docs and comments
• I have added necessary unit tests and integration tests

Refer to a related PR or issue link (optional)

#1891

[codecov]

Codecov Report

Merging #1890 (daace41) into main (470a18a) will decrease coverage by 0.01%.
The diff coverage is 75.00%.

@@            Coverage Diff             @@
##             main    #1890      +/-   ##
==========================================
- Coverage   70.92%   70.91%   -0.02%     
==========================================
  Files         619      619              
  Lines       80106    80049      -57     
==========================================
- Hits        56816    56763      -53     
+ Misses      23290    23286       -4     

Flag	Coverage Δ
rust	70.91% <75.00%> (-0.02%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
...rc/frontend/src/optimizer/plan_node/logical_agg.rs	97.71% <ø> (ø)
src/stream/src/executor_v2/hash_agg.rs	95.89% <75.00%> (+0.48%)	⬆️
.../src/executor/managed_state/aggregation/extreme.rs	90.00% <0.00%> (-0.27%)	⬇️
src/connector/src/filesystem/file_common.rs	80.88% <0.00%> (+0.44%)	⬆️

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[TennyZhuang]

LGTM