Modal product updates: Logs v2, live container profiling, and region selection on all plans

Modal shipped a refreshed logs dashboard with time-range input filtering, live container profiling for debugging stuck containers or inputs, and Debug Shells that run commands like vim, ps, and strace inside running containers. Region selection is now available on all plans, priced with a multiplier on base prices, and the client adds OIDC authentication for cloud bucket mounts via the new oidc_auth_role_arn field.