Fix: from_numpy references ListArray64

[agoose77]

Fixes #1403

[codecov]

Codecov Report

Merging #1404 (b58e02f) into main (a8c37b9) will increase coverage by 0.41%.
The diff coverage is 73.82%.

Impacted Files	Coverage Δ
src/awkward/_v2/_broadcasting.py	93.71% <ø> (ø)
src/awkward/_v2/_connect/cling.py	0.00% <ø> (ø)
src/awkward/_v2/_connect/cuda/__init__.py	0.00% <0.00%> (ø)
src/awkward/_v2/contents/listarray.py	90.80% <ø> (+2.62%)	⬆️
src/awkward/_v2/operations/structure/ak_mask.py	95.23% <ø> (ø)
src/awkward/_v2/highlevel.py	74.31% <65.90%> (+1.19%)	⬆️
src/awkward/_v2/operations/convert/ak_to_layout.py	81.81% <75.00%> (-2.06%)	⬇️
src/awkward/_v2/_connect/numpy.py	62.24% <80.00%> (+0.46%)	⬆️
src/awkward/_v2/_util.py	83.33% <86.40%> (+4.12%)	⬆️
src/awkward/_v2/types/recordtype.py	83.69% <87.50%> (+0.16%)	⬆️
... and 14 more

[jpivarski]

If I had realized how easy this one was going to be, I'd have gotten to it sooner! Absolutely a good fix. I'm glad that it's passing through tests now.

(The reason I added the Codecov tool was in anticipation of a future campaign to increase coverage. It doesn't have to be 100%, but it should someday include all the lines like this.)