Improve logging in range index handler for index updates

[yashmayya]

• Currently, if a range index is added to a column and segment reload is triggered for all segments, not all segments will necessarily have a range index created for that column. Segments where the column is a sorted column will skip creation of the range index.
• This isn't very clearly documented and since there's no associated logging as well, users could be quite confused about why certain segments had the range index created while others didn't (and might assume that something went wrong with the segment reload).
• Also, if there range index updates needed for multiple columns (additions or removals), only the first one is logged.
• This PR fixes both the above issues by adding some clear logging.

[yashmayya]

It's not quite clear when we'd hit this case but I've retained the existing check.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 77.77778% with 2 lines in your changes missing coverage. Please review.

Project coverage is 61.98%. Comparing base (59551e4) to head (7c24ad5).
Report is 617 commits behind head on master.

Files	Patch %	Lines
.../index/loader/invertedindex/RangeIndexHandler.java	77.77%	1 Missing and 1 partial ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##             master   #13381      +/-   ##
============================================
+ Coverage     61.75%   61.98%   +0.23%     
+ Complexity      207      198       -9     
============================================
  Files          2436     2550     +114     
  Lines        133233   140260    +7027     
  Branches      20636    21802    +1166     
============================================
+ Hits          82274    86947    +4673     
- Misses        44911    46716    +1805     
- Partials       6048     6597     +549     

Flag	Coverage Δ
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java-21	61.87% <77.77%> (+0.24%)	⬆️
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temurin	61.98% <77.77%> (+0.23%)	⬆️
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unittests1	46.55% <0.00%> (-0.34%)	⬇️
unittests2	27.66% <77.77%> (-0.07%)	⬇️

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