Revert "Revert "Compress .so files for PackageManager to reclaim the space""

This reverts commit ad0c6b5d.

Reason for revert: rolling forward the .so compression change. According to https://b.corp.google.com/issues/188859114#comment8, the underlying issue was fixed.

Bug: 254793035
Bug: 188859114
Fixes: 254793035
Fixes: 188859114

Change-Id: I4edc15d08527013206e3daf20c33ba29c87a01a2
Merged-In: I4edc15d08527013206e3daf20c33ba29c87a01a2