[Backport 2.9-enhanced] Change query range response structure

[opensearch-trigger-bot]

Backport 4102b58 from #1867.

[codecov]

Codecov Report

Merging #2164 (a9a1382) into 2.9-enhanced (b68f880) will decrease coverage by 0.01%.
The diff coverage is 100.00%.

@@                Coverage Diff                 @@
##             2.9-enhanced    #2164      +/-   ##
==================================================
- Coverage           97.37%   97.37%   -0.01%     
+ Complexity           4605     4600       -5     
==================================================
  Files                 403      403              
  Lines               11400    11389      -11     
  Branches              844      836       -8     
==================================================
- Hits                11101    11090      -11     
  Misses                292      292              
  Partials                7        7              

Flag	Coverage Δ
sql-engine	97.37% <100.00%> (-0.01%)	⬇️

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

Files	Coverage Δ
...ponse/DefaultQueryRangeFunctionResponseHandle.java	100.00% <100.00%> (ø)
...ch/sql/prometheus/response/PrometheusResponse.java	100.00% <100.00%> (ø)
...h/sql/prometheus/storage/PrometheusMetricScan.java	100.00% <100.00%> (ø)
.../sql/prometheus/storage/PrometheusMetricTable.java	100.00% <ø> (ø)
...rage/implementor/PrometheusDefaultImplementor.java	100.00% <100.00%> (ø)