change: enable lowMemoryMode by default

Author: ishland

c2me-rewrites-chunk-system/src/main/java/com/ishland/c2me/rewrites/chunksystem/common/Config.java

@@ -88,7 +88,7 @@ Whether to allow POIs (Point of Interest) to be unloaded
                     This will attempt to aggressively unload unneeded chunks, saving memory at the cost of additional
                     overhead when generating new chunks.
                     """)
-            .getBoolean(false, false);
+            .getBoolean(true, false);
 
     public static void init() {
         // intentionally empty