v.1.51 Hotfix

Fixed an issue causing locker interactions to break when repeating activities after having cleared the game
Fixed some issues causing soft locks during the level 6 lifeguard activity when repeating the activity after having cleared the game
Fixed issues with the level 2 lake event that would occasionally break the event
Added some missing visual effects for Hana's sprite and CGs during the stargazer events
Added some missing visual effects for Hana's sprite and CGs during the duck events, and fixed some minor clipping issues with her clothing during certain parts of the CG
Fixed an issue causing the duck events to not play when viewing an activity memory
Minor adjustment to make world sprites brighter