[Backport 2.x] Replace the deprecated IndexReader APIs with new storedFields() & termVectors()

[luyuncheng]

Backport 4fd6877 from 7792

[github-actions]

Gradle Check (Jenkins) Run Completed with:

• RESULT: FAILURE ❌
• URL: https://build.ci.opensearch.org/job/gradle-check/20991/
• CommitID: 2181d99
  Please examine the workflow log, locate, and copy-paste the failure(s) below, then iterate to green.
  Is the failure a flaky test unrelated to your change?

[github-actions]

Gradle Check (Jenkins) Run Completed with:

• RESULT: UNSTABLE ❕
• TEST FAILURES:

      1 org.opensearch.smoketest.SmokeTestMultiNodeClientYamlTestSuiteIT.test {yaml=pit/10_basic/Delete all}
      1 org.opensearch.repositories.azure.AzureBlobContainerRetriesTests.testWriteBlobWithRetries
      1 org.opensearch.indices.replication.SegmentReplicationTargetServiceTests.testShardAlreadyReplicating

• URL: https://build.ci.opensearch.org/job/gradle-check/20989/
• CommitID: 0c99745
  Please review all flaky tests that succeeded after retry and create an issue if one does not already exist to track the flaky failure.

[codecov]

Codecov Report

Merging #8893 (2181d99) into 2.x (de5e971) will increase coverage by 0.07%.
Report is 3 commits behind head on 2.x.
The diff coverage is 57.14%.

@@             Coverage Diff              @@
##                2.x    #8893      +/-   ##
============================================
+ Coverage     70.73%   70.80%   +0.07%     
- Complexity    57308    57342      +34     
============================================
  Files          4745     4745              
  Lines        271057   271064       +7     
  Branches      39977    39978       +1     
============================================
+ Hits         191723   191921     +198     
+ Misses        62893    62714     -179     
+ Partials      16441    16429      -12     

Files Changed	Coverage Δ
...opensearch/common/lucene/search/XMoreLikeThis.java	36.61% <0.00%> (-0.30%)	⬇️
...earch/fetch/subphase/highlight/HighlightUtils.java	40.00% <0.00%> (ø)
...rg/opensearch/index/engine/TranslogLeafReader.java	38.00% <50.00%> (+0.50%)	⬆️
...ensearch/index/termvectors/TermVectorsService.java	17.58% <50.00%> (+0.36%)	⬆️
...ensearch/gateway/PersistedClusterStateService.java	88.65% <100.00%> (+0.23%)	⬆️
...va/org/opensearch/index/engine/InternalEngine.java	73.75% <100.00%> (+0.97%)	⬆️
...opensearch/index/engine/LuceneChangesSnapshot.java	85.41% <100.00%> (ø)
...java/org/opensearch/index/get/ShardGetService.java	60.89% <100.00%> (ø)
...rg/opensearch/index/shard/ShardSplittingQuery.java	57.25% <100.00%> (+21.37%)	⬆️
...n/java/org/opensearch/search/fetch/FetchPhase.java	38.95% <100.00%> (ø)
... and 2 more

... and 470 files with indirect coverage changes

[github-actions]

Gradle Check (Jenkins) Run Completed with:

• RESULT: UNSTABLE ❕
• TEST FAILURES:

      1 org.opensearch.search.SearchWeightedRoutingIT.testStrictWeightedRoutingWithCustomString

• URL: https://build.ci.opensearch.org/job/gradle-check/21001/
• CommitID: 2181d99
  Please review all flaky tests that succeeded after retry and create an issue if one does not already exist to track the flaky failure.