[code publishing] Mave new flow the default (#2610)
[code publishing] Mave new flow the default (#2610)

The new publishing flow should be the default now so we are getting some feedback how it works. The old flow is still reachable for a bit using `--legacy-flow`. Once we remove that flag, we should also remove the transaction type of module bundle publishing; at that point, no one can publish code unless going over `aptos_framework:code` module.
aptos-labs/aptos-core,aptos-labs/aptos-core,aptos-labs/aptos-core,aptos-labs/aptos-core,aptos-labs/aptos-core,aptos-labs/aptos-core,aptos-labs/aptos-core