Always install to out/target instead of out/soong/target

So that when using soong-only builds, we don't have to update
a bunch of tools and other parts of soong that expect files in
out/target.

Bug: 383892968
Test: m nothing --no-skip-soong-tests
Change-Id: Idba3b5a416e6ffff799ec3ce632a8a4fbafe341f