feat: Support field partial load collection

[congqixia]

Related to #35415

[sre-ci-robot]

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[mergify]

@congqixia E2e jenkins job failed, comment /run-cpu-e2e can trigger the job again.

[mergify]

@congqixia E2e jenkins job failed, comment /run-cpu-e2e can trigger the job again.

[codecov]

Codecov Report

Attention: Patch coverage is 83.51648% with 30 lines in your changes missing coverage. Please review.

Project coverage is 81.44%. Comparing base (4d69898) to head (bd8f499).
Report is 8 commits behind head on master.

Files	Patch %	Lines
internal/proxy/meta_cache.go	87.09%	5 Missing and 3 partials ⚠️
internal/proxy/util.go	81.25%	4 Missing and 2 partials ⚠️
pkg/common/common.go	70.58%	3 Missing and 2 partials ⚠️
internal/proxy/task.go	50.00%	2 Missing and 2 partials ⚠️
pkg/util/typeutil/schema.go	71.42%	2 Missing and 2 partials ⚠️
...rnal/querycoordv2/observers/collection_observer.go	75.00%	2 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master   #35416      +/-   ##
==========================================
+ Coverage   72.38%   81.44%   +9.06%     
==========================================
  Files        1234     1234              
  Lines      145723   145876     +153     
==========================================
+ Hits       105475   118806   +13331     
+ Misses      35691    22496   -13195     
- Partials     4557     4574      +17     

Files	Coverage Δ
internal/proxy/impl.go	85.99% <100.00%> (ø)
internal/querycoordv2/job/job_load.go	90.35% <100.00%> (+0.08%)	⬆️
internal/querycoordv2/meta/collection_manager.go	87.94% <100.00%> (+0.25%)	⬆️
internal/querycoordv2/server.go	83.43% <100.00%> (+0.03%)	⬆️
internal/querycoordv2/services.go	86.31% <100.00%> (+0.07%)	⬆️
internal/querycoordv2/task/executor.go	79.45% <100.00%> (+1.86%)	⬆️
internal/querycoordv2/task/utils.go	94.85% <100.00%> (+0.03%)	⬆️
internal/querynodev2/segments/collection.go	93.43% <100.00%> (+0.51%)	⬆️
internal/querynodev2/segments/segment_loader.go	77.41% <100.00%> (+0.11%)	⬆️
...rnal/querycoordv2/observers/collection_observer.go	87.43% <75.00%> (-0.77%)	⬇️
... and 5 more

... and 230 files with indirect coverage changes

[tedxu]

/lgtm