[RFCLAT#2] Move the packet socket creation from clatd to netd am: 06367f3870 am: 9ed943c790

Original change: https://android-review.googlesource.com/c/platform/external/android-clat/+/1903034

Change-Id: I9ef00c11e6e0b56033216b521aa76d6edcbdd552