feat(simd): missing-lanes sweep — U16x16/U32x8/U64x4/I32x8/I64x4 #390

Job	Run time
native-backend/stable	7m 50s
tier4-avx512-check	22s
nostd/thumbv6m-none-eabi/stable	28s
Pass MSRV values to other jobs	2s
format/stable	17s
hpc-stream-parallel/rayon	1m 24s
clippy/1.95.0	46s
docs/nightly	0s
miri	0s
nightly-simd-polyfill	0s
cargo-careful	0s
cross_test/${{ matrix.target }}/${{ matrix.rust }}	0s
tests/stable	9m 12s
tests/1.95.0	11m 38s
blas-msrv	1m 8s
tests/beta	11m 21s
conclusion	0s
	44m 28s

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