Fake players can be spawned in survival mode while flying (#1264)

* Fixes #1263

* Update src/main/java/carpet/commands/PlayerCommand.java

Co-authored-by: James103 <37945304+James103@users.noreply.github.com>

Co-authored-by: gnembon <41132274+gnembon@users.noreply.github.com>
Co-authored-by: James103 <37945304+James103@users.noreply.github.com>

src/main/java/carpet/commands/PlayerCommand.java

@@ -299,6 +299,9 @@ public class PlayerCommand
         {
             // Force override flying to true for spectator players, or they will fell out of the world.
             flying = true;
+        } else if(mode.isSurvivalLike()){
+            // Force override flying to false for survival-like players, or they will fly too
+            flying = false;
         }
         String playerName = StringArgumentType.getString(context, "player");
         if (playerName.length()>maxPlayerLength(source.getServer()))