Test the darwin/aarch64 native library before publishing #119

The published i386, aarch64, ppc64le, s390x and riscv64 Linux libraries are cross-compiled with -DskipTests and never loaded. test.yml builds its own natives, so it doesn't cover the shipped binaries. The macos-14 (darwin/aarch64) entry at build-all-and-publish.yml:109 only runs process-resources.

• Cheap win: set fullbuild: true for macos-14 so it runs verify. Check that the JDK 7 setup works on arm64 macOS, or skip it the way test.yml does.
• Optional: build aarch64/riscv64 natively on ubuntu-24.04-arm/-riscv with verify (check the glibc baseline).
• Optional: in assemble, run readelf -h on each .so to confirm its machine type and bitness.