Fix locale loading, post-fall generation, and initial block distance

- Fix locale default value parsing (Boolean → String)
- Move first block 3 blocks ahead after fall to avoid platform overlap
- Reduce initial generation from 5 to 3 blocks for better spacing

src/main/resources/config.yml

@@ -474,7 +474,7 @@ default-values:
 
     lang:
       enabled: true
-      default: "en"
+      default: en
 
     chat:
       enabled: true