fix: Avoid memory copy in RESTful search and query

[bigsheeper]

Custom jsonRender that encodes JSON data directly into the response stream, it uses less memory since it does not buffer the entire JSON structure before sending it, unlike c.JSON in HTTPReturn, which serializes the JSON fully in memory before writing it to the response.
Benchmark testing shows that, using the custom render incurs no performance loss and reduces memory consumption by nearly 50%.

issue: #37671

[bigsheeper]

Benchmark:
10MB

cpu: Intel(R) Core(TM) i7-8700 CPU @ 3.20GHz
BenchmarkHTTPReturn
BenchmarkHTTPReturn/test_HTTPReturn
BenchmarkHTTPReturn/test_HTTPReturn-12         	      87	  13127452 ns/op	27992718 B/op	      34 allocs/op
BenchmarkHTTPReturn/test_HTTPReturnStream
BenchmarkHTTPReturn/test_HTTPReturnStream-12   	      87	  12804875 ns/op	14361636 B/op	      31 allocs/op
PASS

1KB

cpu: Intel(R) Core(TM) i7-8700 CPU @ 3.20GHz
BenchmarkHTTPReturn
BenchmarkHTTPReturn/test_HTTPReturn
BenchmarkHTTPReturn/test_HTTPReturn-12         	  231253	      5026 ns/op	    8639 B/op	      28 allocs/op
BenchmarkHTTPReturn/test_HTTPReturnStream
BenchmarkHTTPReturn/test_HTTPReturnStream-12   	  230566	      4769 ns/op	    7582 B/op	      28 allocs/op
PASS

[mergify]

@bigsheeper cpp-unit-test check failed, comment rerun cpp-unit-test can trigger the job again.

[bigsheeper]

rerun cpp-unit-test

[codecov]

Codecov Report

Attention: Patch coverage is 86.36364% with 3 lines in your changes missing coverage. Please review.

Project coverage is 82.46%. Comparing base (b6612e0) to head (6ef5d64).
Report is 3 commits behind head on master.

❗ Current head 6ef5d64 differs from pull request most recent head 17de623

Please upload reports for the commit 17de623 to get more accurate results.

Files with missing lines	Patch %	Lines
internal/distributed/proxy/httpserver/utils.go	50.00%	2 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master   #37674      +/-   ##
==========================================
- Coverage   82.90%   82.46%   -0.44%     
==========================================
  Files        1067     1068       +1     
  Lines      164517   165259     +742     
==========================================
- Hits       136391   136279     -112     
- Misses      22668    23543     +875     
+ Partials     5458     5437      -21     

Components	Coverage Δ
Client	61.25% <ø> (-10.91%)	⬇️
Core	∅ <ø> (∅)
Go	83.16% <86.36%> (-0.04%)	⬇️

Files with missing lines	Coverage Δ
internal/distributed/proxy/httpserver/handler.go	97.89% <ø> (ø)
...nternal/distributed/proxy/httpserver/handler_v1.go	91.00% <100.00%> (ø)
...nternal/distributed/proxy/httpserver/handler_v2.go	91.69% <100.00%> (ø)
...ternal/distributed/proxy/httpserver/json_render.go	100.00% <100.00%> (ø)
...nternal/distributed/proxy/httpserver/request_v2.go	97.33% <ø> (ø)
...distributed/proxy/httpserver/timeout_middleware.go	79.09% <ø> (ø)
...ernal/distributed/proxy/httpserver/wrap_request.go	95.63% <ø> (ø)
internal/distributed/proxy/httpserver/wrapper.go	100.00% <ø> (ø)
internal/distributed/proxy/listener_manager.go	77.27% <ø> (ø)
internal/distributed/proxy/httpserver/utils.go	84.22% <50.00%> (-0.15%)	⬇️

... and 82 files with indirect coverage changes

---- 🚨 Try these New Features:

• Flaky Tests Detection - Detect and resolve failed and flaky tests
• JS Bundle Analysis - Avoid shipping oversized bundles

[mergify]

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

[czs007]

/approve
/lgtm

[xiaofan-luan]

/lgtm
/approve

[sre-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: bigsheeper, czs007, xiaofan-luan

The full list of commands accepted by this bot can be found here.

The pull request process is described here

Needs approval from an approver in each of these files:

• internal/distributed/OWNERS [czs007,xiaofan-luan]

Approvers can indicate their approval by writing /approve in a comment
Approvers can cancel approval by writing /approve cancel in a comment

[bigsheeper]

/run-cpu-e2e

[mergify]

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

[czs007]

/run-cpu-e2e

[mergify]

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

[mergify]

@bigsheeper cpp-unit-test check failed, comment rerun cpp-unit-test can trigger the job again.

[mergify]

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

[czs007]

/lgtm