[Build Break] Fix build after Lucene upgrade and breaking XContentFactory changes

[cwperks]

There are multiple PRs in core affecting the security plugin that the security plugin needs to adapt to.

• Replace the deprecated IndexReader APIs with new storedFields() & termVectors() OpenSearch#7792
• [Refactor] XContentFactory contentType introspection to MediaTypeRegistry OpenSearch#8826
• Update Apache Lucene to 9.8.0-snapshot-4373c3b OpenSearch#8668

I am opening a Draft PR that includes a fix for the Lucene-related test failures which was caused by opensearch-project/OpenSearch#7792

Resolves: #3064

[codecov]

Codecov Report

Merging #3069 (e50d967) into main (d3488e8) will increase coverage by 26.41%.
The diff coverage is 100.00%.

@@              Coverage Diff              @@
##               main    #3069       +/-   ##
=============================================
+ Coverage     36.01%   62.42%   +26.41%     
- Complexity     1870     3349     +1479     
=============================================
  Files           254      254               
  Lines         19735    19744        +9     
  Branches       3334     3334               
=============================================
+ Hits           7108    12326     +5218     
+ Misses        11532     5785     -5747     
- Partials       1095     1633      +538     

Files Changed	Coverage Δ
...security/configuration/DlsFlsFilterLeafReader.java	61.52% <100.00%> (+43.55%)	⬆️
.../org/opensearch/security/support/ConfigHelper.java	86.53% <100.00%> (+26.92%)	⬆️
...a/org/opensearch/security/tools/SecurityAdmin.java	44.40% <100.00%> (+44.40%)	⬆️

... and 149 files with indirect coverage changes

[opensearch-trigger-bot]

The backport to 2.x failed:

The process '/usr/bin/git' failed with exit code 1

To backport manually, run these commands in your terminal:

# Fetch latest updates from GitHub
git fetch
# Create a new working tree
git worktree add .worktrees/backport-2.x 2.x
# Navigate to the new working tree
cd .worktrees/backport-2.x
# Create a new branch
git switch --create backport/backport-3069-to-2.x
# Cherry-pick the merged commit of this pull request and resolve the conflicts
git cherry-pick -x --mainline 1 08d17343c0821f7b7528a9559fc3384af5aa2c5b
# Push it to GitHub
git push --set-upstream origin backport/backport-3069-to-2.x
# Go back to the original working tree
cd ../..
# Delete the working tree
git worktree remove .worktrees/backport-2.x

Then, create a pull request where the base branch is 2.x and the compare/head branch is backport/backport-3069-to-2.x.

[cwperks]

I will create a backport for this ASAP.