Build system changes

== AT ==
public net.minecraft.server.packs.VanillaPackResourcesBuilder safeGetPath(Ljava/net/URI;)Ljava/nio/file/Path;

Co-authored-by: Jake Potrebic <jake.m.potrebic@gmail.com>

paper-server/src/test/java/org/bukkit/support/RegistryHelper.java

@@ -70,6 +70,7 @@ public final class RegistryHelper {
     }
 
     public static void setup(FeatureFlagSet featureFlagSet) {
+        System.setProperty("Paper.pushPaperAssetsRoot", "true"); // Paper - build system changes - push asset root
         SharedConstants.tryDetectVersion();
         Bootstrap.bootStrap();