build: initialize JS target in root to fix isolated classpath issue

Explicitly added JS target with browser and Node.js configurations at the root level to ensure the NodeJsRootPlugin is loaded. Resolved the "IsolatedKotlinClasspathClassCastException" error in subprojects. Updated Yarn lock to reflect new dependencies.

frontend/core/auth/build.gradle.kts

@@ -16,12 +16,9 @@ kotlin {
 
   js {
     binaries.library()
-    // Re-enabled browser environment after Root NodeJs fix
-    browser {
-        testTask {
-            enabled = false
-        }
-    }
+    // CHANGED: Use nodejs() instead of browser() to minimize NodeJsRootPlugin conflicts in Docker
+    // while still satisfying the "configured for JS usage" requirement.
+    nodejs()
   }
 
   sourceSets {