Add debug stack for removed player teleporation check

patches/server/Prevent-teleporting-dead-entities.patch

@@ -12,10 +12,13 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
      }
  
      private void internalTeleport(double d0, double d1, double d2, float f, float f1, Set<ClientboundPlayerPositionPacket.RelativeArgument> set, boolean flag) {
++        // Paper start
 +        if (player.isRemoved()) {
 +            LOGGER.info("Attempt to teleport removed player {} restricted", player.getScoreboardName());
++            if (server.isDebugging()) io.papermc.paper.util.TraceUtil.dumpTraceForThread("Attempt to teleport removed player");
 +            return;
 +        }
++        // Paper end
          // CraftBukkit start
          if (Float.isNaN(f)) {
              f = 0;