[Backport 2.x] Changed format for hybrid query results to a single list of scores with delimiter

[opensearch-trigger-bot]

Backport 75b59cd from #259

[codecov]

Codecov Report

Merging #266 (e250a85) into 2.x (185050a) will decrease coverage by 0.85%.
The diff coverage is 76.55%.

@@             Coverage Diff              @@
##                2.x     #266      +/-   ##
============================================
- Coverage     86.29%   85.44%   -0.85%     
- Complexity      340      370      +30     
============================================
  Files            29       30       +1     
  Lines           992     1079      +87     
  Branches        153      165      +12     
============================================
+ Hits            856      922      +66     
- Misses           70       83      +13     
- Partials         66       74       +8     

Files Changed	Coverage Δ
...neuralsearch/processor/NormalizationProcessor.java	80.00% <60.00%> (-3.88%)	⬇️
...lsearch/search/query/HybridQueryPhaseSearcher.java	71.42% <62.85%> (-2.16%)	⬇️
...arch/processor/NormalizationProcessorWorkflow.java	81.13% <72.97%> (-6.87%)	⬇️
...r/normalization/L2ScoreNormalizationTechnique.java	83.33% <75.00%> (ø)
...rmalization/MinMaxScoreNormalizationTechnique.java	84.61% <80.00%> (ø)
...ralsearch/processor/combination/ScoreCombiner.java	91.83% <85.71%> (ø)
...arch/search/util/HybridSearchResultFormatUtil.java	85.71% <85.71%> (ø)
...search/neuralsearch/processor/CompoundTopDocs.java	92.30% <92.30%> (ø)
...earch/processor/normalization/ScoreNormalizer.java	100.00% <100.00%> (+20.00%)	⬆️