feat: support load balance for streaming connection creation

[shenqidebaozi]

Description (what this PR does / why we need it):

Which issue(s) this PR fixes (resolves / be part of):

Other special notes for the reviewers:

[codecov-commenter]

Codecov Report

Merging #2669 (cb9ccba) into main (27eadd8) will increase coverage by 0.05%.
The diff coverage is 87.50%.

❗ Current head cb9ccba differs from pull request most recent head faa13cd. Consider uploading reports for the commit faa13cd to get more accurate results

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@@            Coverage Diff             @@
##             main    #2669      +/-   ##
==========================================
+ Coverage   84.89%   84.94%   +0.05%     
==========================================
  Files          88       88              
  Lines        3873     3887      +14     
==========================================
+ Hits         3288     3302      +14     
  Misses        411      411              
  Partials      174      174              

Impacted Files	Coverage Δ
transport/grpc/client.go	85.58% <87.50%> (+2.08%)	⬆️

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[shenqidebaozi]

@longXboy @tonybase PTAL.