Formatting clean-up for rebalance

[somandal]

This PR just cleans up some formatting in the TableRebalancer and DefaultRebalancePreChecker classes. No functionality changes are included

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 42.22222% with 26 lines in your changes missing coverage. Please review.

Project coverage is 63.21%. Comparing base (1a476de) to head (9e13241).
Report is 397 commits behind head on master.

Files with missing lines	Patch %	Lines
...ntroller/helix/core/rebalance/TableRebalancer.java	46.66%	16 Missing ⚠️
...lix/core/rebalance/DefaultRebalancePreChecker.java	33.33%	10 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##             master   #16266      +/-   ##
============================================
+ Coverage     62.90%   63.21%   +0.31%     
+ Complexity     1386     1363      -23     
============================================
  Files          2867     2962      +95     
  Lines        163354   171471    +8117     
  Branches      24952    26272    +1320     
============================================
+ Hits         102755   108396    +5641     
- Misses        52847    54852    +2005     
- Partials       7752     8223     +471     

Flag	Coverage Δ
custom-integration1	100.00% <ø> (ø)
integration	100.00% <ø> (ø)
integration1	100.00% <ø> (ø)
integration2	0.00% <ø> (ø)
java-11	63.18% <42.22%> (+0.31%)	⬆️
java-21	63.19% <42.22%> (+0.37%)	⬆️
skip-bytebuffers-false	?
skip-bytebuffers-true	?
temurin	63.21% <42.22%> (+0.31%)	⬆️
unittests	63.21% <42.22%> (+0.31%)	⬆️
unittests1	64.76% <ø> (+8.94%)	⬆️
unittests2	33.38% <42.22%> (-0.19%)	⬇️

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[somandal]

Test failure is unrelated and is a known flaky test:

Error:  Failures: 
Error:    TableRebalancePauselessIntegrationTest.testForceCommit:184->BaseClusterIntegrationTestSet.waitForRebalanceToComplete:824 Failed to meet condition in 30000ms, error message: Failed to complete rebalance
Error:    TableRebalancePauselessIntegrationTest.testForceCommit:184->BaseClusterIntegrationTestSet.waitForRebalanceToComplete:824 Failed to meet condition in 30000ms, error message: Failed to complete rebalance