fix: support auto index for array

[longjiquan]

/kind branch-feature
pr: #34450

[mergify]

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

[czs007]

/approve

[sre-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: czs007, longjiquan

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Needs approval from an approver in each of these files:

• internal/proxy/OWNERS [czs007]
• internal/querycoordv2/balance/OWNERS [czs007]
• pkg/util/OWNERS [czs007]

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[codecov]

Codecov Report

Attention: Patch coverage is 70.00000% with 6 lines in your changes missing coverage. Please review.

Project coverage is 81.10%. Comparing base (cc188fb) to head (ba46c8e).
Report is 3 commits behind head on 2.4.

Additional details and impacted files

@@            Coverage Diff             @@
##              2.4   #35095      +/-   ##
==========================================
- Coverage   81.10%   81.10%   -0.01%     
==========================================
  Files        1051     1051              
  Lines      136692   136726      +34     
==========================================
+ Hits       110870   110889      +19     
- Misses      21620    21633      +13     
- Partials     4202     4204       +2     

Files	Coverage Δ
internal/proxy/accesslog/info/grpc_info.go	96.47% <ø> (ø)
pkg/util/paramtable/component_param.go	98.53% <ø> (ø)
pkg/util/typeutil/schema.go	85.59% <0.00%> (-0.15%)	⬇️
internal/proxy/task_index.go	84.35% <77.77%> (+0.04%)	⬆️

... and 28 files with indirect coverage changes

[zhagnlu]

/lgtm