fix(rivetkit): standardize startEngine + runtime mode based on config#4851

NathanFlurry wants to merge 1 commit into04-28-fix_engine_remove_envoy_sqlite_lifecycle_bookkeepingrivet-dev/rivet:04-28-fix_engine_remove_envoy_sqlite_lifecycle_bookkeepingfrom

04-29-fix_rivetkit_standardize_startengine_runtime_mode_based_on_configrivet-dev/rivet:04-29-fix_rivetkit_standardize_startengine_runtime_mode_based_on_configCopy head branch name to clipboard