Rename LLRealtimeSegmentDataManager to RealtimeSegmentDataManager

[Jackie-Jiang]

Follow up on #11680

[codecov-commenter]

Codecov Report

Merging #11687 (3c5645a) into master (ff264a3) will increase coverage by 48.48%.
Report is 2 commits behind head on master.
The diff coverage is 21.05%.

@@              Coverage Diff              @@
##             master   #11687       +/-   ##
=============================================
+ Coverage     14.45%   62.94%   +48.48%     
- Complexity      201     1118      +917     
=============================================
  Files          2341     2343        +2     
  Lines        125632   125672       +40     
  Branches      19313    19314        +1     
=============================================
+ Hits          18158    79100    +60942     
+ Misses       105935    40909    -65026     
- Partials       1539     5663     +4124     

Flag	Coverage Δ
integration	0.00% <0.00%> (ø)
integration2	0.00% <0.00%> (ø)
java-11	14.44% <10.52%> (+14.44%)	⬆️
java-17	62.91% <21.05%> (+48.46%)	⬆️
java-20	14.46% <10.52%> (+0.02%)	⬆️
temurin	62.94% <21.05%> (+48.48%)	⬆️
unittests	62.94% <21.05%> (+48.48%)	⬆️
unittests1	67.03% <33.33%> (?)
unittests2	14.46% <10.52%> (+0.01%)	⬆️

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

Files	Coverage Δ
...a/manager/realtime/RealtimeSegmentDataManager.java	50.66% <100.00%> (ø)
...e/data/manager/realtime/SplitSegmentCommitter.java	24.24% <ø> (+24.24%)	⬆️
.../helix/FreshnessBasedConsumptionStatusChecker.java	100.00% <ø> (ø)
.../helix/IngestionBasedConsumptionStatusChecker.java	100.00% <100.00%> (ø)
...ter/helix/OffsetBasedConsumptionStatusChecker.java	91.66% <ø> (ø)
...ache/pinot/server/api/resources/DebugResource.java	0.00% <0.00%> (ø)
...r/helix/SegmentOnlineOfflineStateModelFactory.java	0.00% <0.00%> (ø)
...che/pinot/server/api/resources/TablesResource.java	60.98% <0.00%> (ø)
...ata/manager/realtime/RealtimeTableDataManager.java	32.00% <0.00%> (+32.00%)	⬆️
...server/starter/helix/HelixInstanceDataManager.java	0.00% <0.00%> (ø)

... and 1515 files with indirect coverage changes

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