Change `ALIGNMENT_TO_HOST_COPY` to `Alignment::HOST_COPY` #3919

Job	Run time
Python (wheel build)	5m 18s
check-java-publish-build (x86_64-unknown-linux-gnu, runs-on=27751596731/runner=amd64-medium/image...	1m 16s
Rust publish dry-run	23s
check-java-publish-build (aarch64-unknown-linux-gnu, runs-on=27751596731/runner=arm64-medium/imag...	1m 57s
Compat check / compat-test	5m 35s
	14m 29s

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