Make restart() inherit timeout and max_retries from run()

When restart() is called without explicit timeout/max_retries parameters,
it now inherits the values used in the last run() call. This ensures
consistent behavior between initial startup and restart.

Previously, restart() defaulted to timeout=30s and max_retries=1, while
run() might have been called with different values (e.g., timeout=60s,
max_retries=3). This caused flaky test failures when restart() was used
after time jumps that required longer processing time.