fix: make e2e tests pass reliably locally with Docker Desktop

- Fix stale image/container reuse across test runs                                                                                                                                                                                                                                                          - Add registry readiness check and async removal polling
  - Skip multi-arch test when docker driver supports it
  - Use t.Cleanup for reliable teardown, fix project name mismatches
  - Re-enable 4 previously skipped tests that now pass

Signed-off-by: Guillaume Lours <glours@users.noreply.github.com>