fix: Set loom.platform

Author: null2264

build.gradle.kts

@@ -111,9 +111,10 @@ subprojects {
     apply(plugin = "com.gradleup.shadow")
     if (isModModule) {
         apply(plugin = "dev.architectury.loom")
-        extra.set("loom.platform", rootProject.properties["loaderName"] as? String ?: "fabric")
     }
 
+    extra.set("loom.platform", rootProject.properties["loaderName"] as? String ?: "fabric")
+
     val manifoldVersion = project.properties["manifold_version"] as? String ?: ""
 
     val shade: Configuration by configurations.creating {