Fix inconsistent Paused state for Chart Preview

Themes/Til Death/BGAnimations/_chartpreview.lua

@@ -83,6 +83,9 @@ local t = Def.ActorFrame {
 		InitCommand = function(self)
 			self:xy(wodth/2, SCREEN_HEIGHT/2)
 			self:settext(""):diffuse(color("0.8,0,0"))
+		end,
+		NoteFieldVisibleMessageCommand = function(self)
+			self:settext("")
 		end
 	},
 	Def.Quad {

src/Etterna/Models/Songs/Song.cpp

@@ -1973,6 +1973,7 @@ Song::Borp()
 		PlayParams.fLengthSeconds = GetLastSecond() + 2.f;
 	}
 	SOUND->PlayMusic(PlayParams, FallbackMusic);
+	GAMESTATE->SetPaused(false);
 }
 
 void

src/Etterna/Screen/Others/ScreenSelectMusic.cpp

@@ -1485,6 +1485,7 @@ ScreenSelectMusic::GeneratePreviewNoteField()
 	}
 
 	GAMESTATE->m_bIsChartPreviewActive = true;
+	GAMESTATE->SetPaused(false);
 
 	// Create and Render the NoteField afterwards
 	// It is done in this order so we don't see it before the music changes.