Remove probe-time null equality parameters in cudf::hash_join

[PointKernel]

Closes #9155

This PR removes the probe-time cudf::null_equality parameter in cudf::hash_join to avoid potential mismatching bugs between building and probing a hash join object.

[codecov]

Codecov Report

Merging #10260 (d888d5b) into branch-22.04 (a7d88cd) will increase coverage by 0.00%.
The diff coverage is 0.00%.

❗ Current head d888d5b differs from pull request most recent head ba3fdd8. Consider uploading reports for the commit ba3fdd8 to get more accurate results

@@              Coverage Diff              @@
##           branch-22.04   #10260   +/-   ##
=============================================
  Coverage         10.42%   10.43%           
=============================================
  Files               119      122    +3     
  Lines             20603    20583   -20     
=============================================
- Hits               2148     2147    -1     
+ Misses            18455    18436   -19     

Impacted Files	Coverage Δ
python/cudf/cudf/_fuzz_testing/fuzzer.py	0.00% <0.00%> (ø)
python/cudf/cudf/_fuzz_testing/io.py	0.00% <0.00%> (ø)
python/cudf/cudf/_fuzz_testing/main.py	0.00% <0.00%> (ø)
python/cudf/cudf/_version.py	0.00% <0.00%> (ø)
python/cudf/cudf/comm/gpuarrow.py	0.00% <0.00%> (ø)
python/cudf/cudf/core/_base_index.py	0.00% <0.00%> (ø)
python/cudf/cudf/core/column/categorical.py	0.00% <0.00%> (ø)
python/cudf/cudf/core/column/column.py	0.00% <0.00%> (ø)
python/cudf/cudf/core/column/datetime.py	0.00% <ø> (ø)
python/cudf/cudf/core/column/methods.py	0.00% <0.00%> (ø)
... and 48 more

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[codereport]

lgtm 👍

[jlowe]

@PointKernel this is a breaking change, as the public API of cudf::hash_join changed. This is also noted by the broken Java build using that API.

I've updated the Java build for this breaking change in #10268. Feel free to cherry-pick that commit to this PR, or we can merge the other PR after this one is merged (Java CI failures are currently non-blocking).

[PointKernel]

@jlowe Thanks for doing the java changes. I was replying to your java follow-up PR and then noticed your message here. If you don't mind, I will merge your java commits here to make sure CI tests can pass.

[revans2]

Approving the java/JNI code

[PointKernel]

@gpucibot merge