[Java] Fix format with spotless

[ldematte]

Changes introduced with #1404 were not formatted correctly
Running spotless (via build.sh) fixed the formatting.

CC @mythrocks @cjnolet

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[mythrocks]

Not sure why the PR's CI didn't catch that. Thanks for fixing this, @ldematte.

[mythrocks]

/ok to test f662e1e

[mythrocks]

/merge

[mythrocks]

There seems to be a transient failure in CI: https://github.com/rapidsai/cuvs/actions/runs/19369951714/job/55447835806?pr=1539

[----------] Global test environment tear-down
[==========] 256 tests from 4 test suites ran. (55364 ms total)
[  PASSED  ] 255 tests.
[  FAILED  ] 1 test, listed below:
[  FAILED  ] AnnHNSWTest/AnnHNSW_H.AnnHNSW/1, where GetParam() = dataset shape=1000x5, graph_degree=32, metric=distance::InnerProduct, ef=250
...
 1 FAILED TEST
CMake Error at run_gpu_test.cmake:26 (execute_process):
  execute_process failed command indexes:

    1: "Child return code: 1"
...
97% tests passed, 1 tests failed out of 30

Total Test time (real) = 5611.04 sec

The following tests FAILED:
	 25 - NEIGHBORS_HNSW_TEST (Failed)

I'll see if this has been fixed upstream, and raise a bug if it recurs.

[mythrocks]

/ok to test 959c91f