Make OSK and msg dialogs take time to init/shutdown

Really, I had forgotten how slow OSK and MsgDialogs come up on a PSP.  I now remember it always felt laggy... not as obvious when testing.

MsgDialogs actually shockingly take longer (~720ms) than OSKs (~700ms).  Anyway, I toned both down to 300ms, which is much less annoying.  Hopefully it's not necessary to take 700ms.

I figure, if the savedata change fixed stuff, this might too.

-[Unknown]