Follow-up to the verify-macho.ts skip: the universal app bundler
(vscode-universal-bundler) also rejects identical-in-both-builds Mach-O
files unless they are tagged via x64ArchFiles and excluded from
comparison. mxc-sdk ships bin/arm64/mxc-exec-mac unchanged in both x64
and arm64 builds, so add it to both lists. Seen in insider build 441436.