Modded test fixes

- Language asset test locates the directory through the English file
- Structure template test reads the mixin class bytes instead of loading it
- Water spawn test initializes block state caches before running
- Logging policy check runs after the native sources are unpacked
- Native class boundary check runs after classes compile

gradle/native-minecraft-sources.gradle

@@ -37,6 +37,14 @@ tasks.named('processResources').configure {
     dependsOn(unpackNativeMinecraftSources)
 }
 
+tasks.named('verifyLoggingPolicy').configure {
+    dependsOn(unpackNativeMinecraftSources)
+}
+
+tasks.named('verifyNativeClassBoundary').configure {
+    dependsOn(tasks.named('classes'))
+}
+
 tasks.matching { Task task -> task.name == 'createMinecraftArtifacts' }.configureEach {
     dependsOn(unpackNativeMinecraftSources)
 }