[Flaky-test] Fix ForwardIndexHandlerTest.testAddOtherIndexForForwardIndexDisabledColumn()

[Jackie-Jiang]

The test will fail when max MV entries is 1 (random between 1 - 500). Revise the testing logic

Error:  org.apache.pinot.segment.local.segment.index.loader.ForwardIndexHandlerTest.testAddOtherIndexForForwardIndexDisabledColumn -- Time elapsed: 0.184 s <<< FAILURE!
java.lang.AssertionError: did not expect [1000] but found [1000]
	at org.testng.Assert.fail(Assert.java:111)
	at org.testng.Assert.failEquals(Assert.java:1582)
	at org.testng.Assert.assertNotEqualsImpl(Assert.java:157)
	at org.testng.Assert.assertNotEquals(Assert.java:2201)
	at org.testng.Assert.assertNotEquals(Assert.java:2223)
	at org.apache.pinot.segment.local.segment.index.loader.ForwardIndexHandlerTest.testAddOtherIndexForForwardIndexDisabledColumn(ForwardIndexHandlerTest.java:1957)

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 63.94%. Comparing base (59551e4) to head (890b077).
Report is 1414 commits behind head on master.

Additional details and impacted files

@@             Coverage Diff              @@
##             master   #14580      +/-   ##
============================================
+ Coverage     61.75%   63.94%   +2.18%     
- Complexity      207     1570    +1363     
============================================
  Files          2436     2683     +247     
  Lines        133233   147335   +14102     
  Branches      20636    22587    +1951     
============================================
+ Hits          82274    94207   +11933     
- Misses        44911    46178    +1267     
- Partials       6048     6950     +902     

Flag	Coverage Δ
custom-integration1	100.00% <ø> (+99.99%)	⬆️
integration	100.00% <ø> (+99.99%)	⬆️
integration1	100.00% <ø> (+99.99%)	⬆️
integration2	0.00% <ø> (ø)
java-11	63.91% <ø> (+2.20%)	⬆️
java-21	63.83% <ø> (+2.21%)	⬆️
skip-bytebuffers-false	63.93% <ø> (+2.18%)	⬆️
skip-bytebuffers-true	63.82% <ø> (+36.09%)	⬆️
temurin	63.94% <ø> (+2.18%)	⬆️
unittests	63.93% <ø> (+2.18%)	⬆️
unittests1	55.53% <ø> (+8.64%)	⬆️
unittests2	34.60% <ø> (+6.86%)	⬆️

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