20240831fix

Fixed a bug in which a shortcut key could be used to “propose” when the user was a ronin.
Fixed a bug that the “Occupy” button appeared on the sea.
When a player is a vassal and a fellow vassal attacks and occupies another's territory and it is recognized as the territory of the fellow vassal, in rare cases, the player's territory may not be occupied by the fellow vassal.
Fixed a case in which a player's lands might be
Fixed a bug that prevented a player from advancing his army on a hidden territory for debugging purposes.
Other minor fixes