[BUG] [Java] `CagraRandomizedIT.testResultsTopKWithRandomValues` fails randomly

CagraRandomizedIT.testResultsTopKWithRandomValues fails occasionally, causing CI pipelines to fail randomly.

This was seen on the second-last CI run on #1366. I was able to repro this locally:

[ERROR] Tests run: 1, Failures: 1, Errors: 0, Skipped: 0, Time elapsed: 3.481 s <<< FAILURE! -- in com.nvidia.cuvs.CagraRandomizedIT
[ERROR] com.nvidia.cuvs.CagraRandomizedIT.testResultsTopKWithRandomValues -- Time elapsed: 3.479 s <<< FAILURE!
java.lang.AssertionError: Not found in expected list: 448
        at __randomizedtesting.SeedInfo.seed([DD841DFC69E8C00:24F49D4798CD7240]:0)
        at org.junit.Assert.fail(Assert.java:89)
        at org.junit.Assert.assertTrue(Assert.java:42)
        at com.nvidia.cuvs@25.12.0/com.nvidia.cuvs.CuVSTestCase.compareResults(CuVSTestCase.java:104)
        at com.nvidia.cuvs@25.12.0/com.nvidia.cuvs.CagraRandomizedIT.tmpResultsTopKWithRandomValues(CagraRandomizedIT.java:170)
        at com.nvidia.cuvs@25.12.0/com.nvidia.cuvs.CagraRandomizedIT.testResultsTopKWithRandomValues(CagraRandomizedIT.java:44)
        at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103)
        at java.base/java.lang.reflect.Method.invoke(Method.java:580)
        at com.carrotsearch.randomizedtesting.RandomizedRunner.invoke(RandomizedRunner.java:1763)
        at com.carrotsearch.randomizedtesting.RandomizedRunner$8.evaluate(RandomizedRunner.java:946)
        at com.carrotsearch.randomizedtesting.RandomizedRunner$9.evaluate(RandomizedRunner.java:982)
        at com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at com.carrotsearch.randomizedtesting.ThreadLeakControl$StatementRunner.run(ThreadLeakControl.java:390)
        at com.carrotsearch.randomizedtesting.ThreadLeakControl.forkTimeoutingTask(ThreadLeakControl.java:843)
        at com.carrotsearch.randomizedtesting.ThreadLeakControl$3.evaluate(ThreadLeakControl.java:490)
        at com.carrotsearch.randomizedtesting.RandomizedRunner.runSingleTest(RandomizedRunner.java:955)
        at com.carrotsearch.randomizedtesting.RandomizedRunner$5.evaluate(RandomizedRunner.java:840)
        at com.carrotsearch.randomizedtesting.RandomizedRunner$6.evaluate(RandomizedRunner.java:891)
        at com.carrotsearch.randomizedtesting.RandomizedRunner$7.evaluate(RandomizedRunner.java:902)
        at com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at com.carrotsearch.randomizedtesting.ThreadLeakControl$StatementRunner.run(ThreadLeakControl.java:390)
        at com.carrotsearch.randomizedtesting.ThreadLeakControl.forkTimeoutingTask(ThreadLeakControl.java:843)
        at com.carrotsearch.randomizedtesting.ThreadLeakControl$2.evaluate(ThreadLeakControl.java:426)
        at com.carrotsearch.randomizedtesting.RandomizedRunner.runSuite(RandomizedRunner.java:716)
        at com.carrotsearch.randomizedtesting.RandomizedRunner.access$200(RandomizedRunner.java:138)
        at com.carrotsearch.randomizedtesting.RandomizedRunner$2.run(RandomizedRunner.java:637)

It would be good to get to the bottom of this. To avoid further churn in CI, it might be good to temporarily back this test out.

Start with CagraRandomizedIT.testResultsTopKWithRandomValues and its helper at CagraRandomizedIT.java:170, then inspect CuVSTestCase.compareResults at line 104 using the reported randomized seed. Determine why expected results intermittently omit a returned value, then stabilize the test or temporarily back it out so CI no longer fails randomly.