refactor: move validatePathIsMember logic to NIO files API

common/implementation/base/src/main/java/com/dfsek/terra/registry/master/ConfigRegistry.java

@@ -68,8 +68,7 @@ public class ConfigRegistry extends OpenRegistryImpl<ConfigPack> implements Exte
 
     @Override
     public boolean validatePathIsMember(Path path) {
-        var file = path.toFile();
-        return file.isDirectory() || file.getName().endsWith(".zip");
+        return Files.isDirectory(path)|| path.getFileName().endsWith(".zip");
     }
 
     public static class PackLoadFailuresException extends Exception {

common/implementation/base/src/main/java/com/dfsek/terra/registry/master/MetaConfigRegistry.java

@@ -68,7 +68,6 @@ public class MetaConfigRegistry extends OpenRegistryImpl<MetaPack> implements Ex
 
     @Override
     public boolean validatePathIsMember(Path path) {
-        var file = path.toFile();
-        return file.isDirectory() || file.getName().endsWith(".zip");
+        return Files.isDirectory(path) || path.getFileName().endsWith(".zip");
     }
 }