chore(turnier-feature): remove unused ViewModels and UI components

- Removed `AbteilungViewModel`, `BewerbAnlegenViewModel`, `BewerbViewModel`, and `CreateBewerbWizardScreen`.
- Cleaned up related imports and unused domain models.

frontend/core/navigation/build.gradle.kts

@@ -10,13 +10,12 @@ version = "1.0.0"
 
 kotlin {
   jvm()
-  js {
-    binaries.library()
-    browser {
-      testTask {
-        enabled = false
-      }
-    }
+  js(IR) {
+    browser()
+  }
+  @OptIn(org.jetbrains.kotlin.gradle.ExperimentalWasmDsl::class)
+  wasmJs {
+    browser()
   }
 
   sourceSets {