fix c/r on mac compile bug

[luke-lombardi]

Summary by cubic

Removed Cedana-based checkpoint/restore to fix macOS build errors and simplify CRIU usage. CRIU now supports only Nvidia CUDA mode.

• Refactors

  • Dropped Cedana CRIU integration and related types; removed CRIUConfigModeCedana and pkg/worker/criu_cedana.go.
  • Removed Cedana settings from config.default.yaml.
  • InitializeCRIUManager now only handles nvidia and returns “unsupported CRIU mode” for others.
  • Trimmed dependencies: removed Cedana packages and protos; cleaned go.mod/go.sum. Added indirect github.com/mattn/go-sqlite3 and github.com/opencontainers/selinux.

• Migration

  • Set worker.criu.mode to nvidia or disable CRIU if not needed.
  • Remove any worker.criu.cedana config blocks. Cedana is no longer supported.

^{Written for commit e8e3e58. Summary will update on new commits. Review in cubic}