Set handle-invalid-item-count viaversion setting to default true

See 22678ba99b

src/main/java/net/raphimc/viaproxy/protocoltranslator/ProtocolTranslator.java

@@ -78,6 +78,7 @@ public class ProtocolTranslator {
                     1_13-tab-complete-delay: 5
                     no-delay-shield-blocking: true
                     chunk-border-fix: true
+                    handle-invalid-item-count: true
                     """, StandardOpenOption.CREATE_NEW);
         } catch (FileAlreadyExistsException ignored) {
         } catch (Throwable e) {