Use BitIndexIterator in min_max_helper

[viirya]

Which issue does this PR close?

Closes #2674.

Rationale for this change

min nulls 512           time:   [1.0670 µs 1.0697 µs 1.0736 µs]                           
                        change: [-43.808% -43.357% -42.886%] (p = 0.00 < 0.05)
                        Performance has improved.

max nulls 512           time:   [1.1034 µs 1.1092 µs 1.1142 µs]                           
                        change: [-44.535% -44.077% -43.658%] (p = 0.00 < 0.05)
                        Performance has improved.

min string 512          time:   [1.5545 µs 1.5591 µs 1.5655 µs]                            
                        change: [-2.2943% -1.8124% -1.3211%] (p = 0.00 < 0.05)
                        Performance has improved.
Found 13 outliers among 100 measurements (13.00%)
  5 (5.00%) high mild
  8 (8.00%) high severe

What changes are included in this PR?

Are there any user-facing changes?

[ursabot]

Benchmark runs are scheduled for baseline = c8bf1ca and contender = b36bc88. b36bc88 is a master commit associated with this PR. Results will be available as each benchmark for each run completes.
Conbench compare runs links:
[Skipped ⚠️ Benchmarking of arrow-rs-commits is not supported on ec2-t3-xlarge-us-east-2] ec2-t3-xlarge-us-east-2
[Skipped ⚠️ Benchmarking of arrow-rs-commits is not supported on test-mac-arm] test-mac-arm
[Skipped ⚠️ Benchmarking of arrow-rs-commits is not supported on ursa-i9-9960x] ursa-i9-9960x
[Skipped ⚠️ Benchmarking of arrow-rs-commits is not supported on ursa-thinkcentre-m75q] ursa-thinkcentre-m75q
Buildkite builds:
Supported benchmarks:
ec2-t3-xlarge-us-east-2: Supported benchmark langs: Python, R. Runs only benchmarks with cloud = True
test-mac-arm: Supported benchmark langs: C++, Python, R
ursa-i9-9960x: Supported benchmark langs: Python, R, JavaScript
ursa-thinkcentre-m75q: Supported benchmark langs: C++, Java