Fixing compilation errors from mediatype refactoring changes

[martin-gaievski]

Description

Fixed compilation errors after changes in core (opensearch-project/OpenSearch#9078, opensearch-project/OpenSearch#9050 and opensearch-project/OpenSearch#9054)

Check List

• All tests pass
• Commits are signed as per the DCO using --signoff

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[codecov]

Codecov Report

Merging #1029 (f53b1c9) into 2.x (85c5a3a) will increase coverage by 0.06%.
The diff coverage is 100.00%.

@@             Coverage Diff              @@
##                2.x    #1029      +/-   ##
============================================
+ Coverage     85.07%   85.13%   +0.06%     
- Complexity     1145     1148       +3     
============================================
  Files           154      154              
  Lines          4702     4702              
  Branches        428      428              
============================================
+ Hits           4000     4003       +3     
+ Misses          509      506       -3     
  Partials        193      193              

Files Changed	Coverage Δ
...ain/java/org/opensearch/knn/index/KNNSettings.java	84.37% <ø> (ø)
.../opensearch/knn/index/KNNVectorIndexFieldData.java	100.00% <ø> (ø)
...index/codec/KNN80Codec/KNN80DocValuesConsumer.java	88.69% <100.00%> (ø)

... and 3 files with indirect coverage changes