Update BindToClose Callback (#1296)

PR to add `Enum.CloseReason` to `game.BindToClose` callback parameters. 

https://devforum.roblox.com/t/bindtoclose-api-improvements/3139159

https://create.roblox.com/docs/reference/engine/classes/DataModel#BindToClose

include/customDefinitions.d.ts

@@ -278,7 +278,7 @@ interface ContextActionService extends Instance {
 
 interface DataModel extends ServiceProvider<Services> {
 	readonly Workspace: Workspace;
-	BindToClose(this: DataModel, callback: () => void): void;
+	BindToClose(this: DataModel, callback: (reason: Enum.CloseReason) => void): void;
 }
 
 interface DataStore extends GlobalDataStore {