Test failure: bit_chunk_iterator

[nevi-me]

Describe the bug
The test_unaligned_bit_chunk_iterator() test fails to run on aarch64 because of an assertion assert!(ALIGNMENT > 64). There are several platforms that support 64-bit or lower alignment, and this assertion will also fail on them.

To Reproduce
Steps to reproduce the behavior:

Run arrow tests with arm, aarch64 or other platform with a lower alignment than the assertion

Expected behavior
A clear and concise description of what you expected to happen.

Not sure of what the implication of > 64 alignment is, as I haven't been following the codebase

Additional context
Add any other context about the problem here.

Here's the alignment for aarch64 https://github.com/apache/arrow-rs/blob/master/arrow/src/alloc/alignment.rs#L119. CC @tustvold from #1228

[tustvold]

IIRC this will just impact the correctness of the test and not the code, but I'll take a look and get a fix in. Thanks for reporting 👍