Fix persistent menu after /start command (aiogram 3.x)

Job description

FishBot (@fishinglogs bot) — after /start the main menu should always be a single persistent message (edit in place). Currently sometimes a new menu is sent instead of editing the existing one, causing duplicates. menu msg id stored in UserSettings.modules[" menu msg id"]. Need to fix goto menu() logic in bot/menu helpers.py to always edit existing message reliably.