Fixes the generated Python build scripts to use an absolute import (from
template import template) instead of a relative one, which broke python
build_dev.py with ImportError: attempted relative import with no known
parent package since the files are emitted as flat siblings with no
package. This reverts an unintended change from #954 that was flagged by
Cursor Bugbot at the time but not addressed. Fixes#1477.
mattteufel-e2b
d071bb78c8