[feat][backend] optimize write of multi modal data

[Celoria]

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[codecov]

Codecov Report

❌ Patch coverage is 88.55932% with 27 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
...ckend/modules/evaluation/infra/rpc/data/dataset.go	68.57%	11 Missing ⚠️
...dules/evaluation/application/evaluation_set_app.go	66.66%	8 Missing and 1 partial ⚠️
...ion/application/convertor/evaluation_set/import.go	50.00%	3 Missing ⚠️
...i/handler/coze/loop/apis/evaluation_set_service.go	0.00%	2 Missing ⚠️
...s/evaluation/domain/service/evaluation_set_impl.go	33.33%	2 Missing ⚠️

@@            Coverage Diff             @@
##             main     #454      +/-   ##
==========================================
+ Coverage   75.10%   75.46%   +0.35%     
==========================================
  Files         633      633              
  Lines       67602    67793     +191     
==========================================
+ Hits        50772    51157     +385     
+ Misses      13594    13387     -207     
- Partials     3236     3249      +13     

Flag	Coverage Δ
unittests	75.46% <88.55%> (+0.35%)	⬆️

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

Files with missing lines	Coverage Δ
...ication/convertor/evaluation_set/evaluation_set.go	98.30% <100.00%> (+34.20%)	⬆️
...on/application/convertor/evaluation_set/openapi.go	98.85% <100.00%> (+2.62%)	⬆️
...modules/evaluation/application/eval_openapi_app.go	92.43% <100.00%> (+<0.01%)	⬆️
backend/modules/evaluation/domain/entity/common.go	87.75% <100.00%> (+0.52%)	⬆️
...modules/evaluation/domain/entity/evaluation_set.go	74.07% <ø> (ø)
backend/modules/evaluation/domain/entity/param.go	64.28% <ø> (ø)
...luation/domain/service/evaluation_set_item_impl.go	95.23% <100.00%> (+0.05%)	⬆️
...ckend/modules/evaluation/infra/rpc/data/convert.go	95.15% <100.00%> (+1.35%)	⬆️
...i/handler/coze/loop/apis/evaluation_set_service.go	0.00% <0.00%> (ø)
...s/evaluation/domain/service/evaluation_set_impl.go	92.00% <33.33%> (-2.45%)	⬇️
... and 3 more

... and 4 files with indirect coverage changes

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