[kotlin] J2K: Refactor annotation use-site target enum

^KTIJ-8880

GitOrigin-RevId: 28fa5466e5875d4dd44407a5a4af19a6634f6dd2

plugins/kotlin/j2k/new/src/org/jetbrains/kotlin/nj2k/tree/elements.kt

@@ -163,18 +163,16 @@ class JKAnnotation(
     override fun accept(visitor: JKVisitor) = visitor.visitAnnotation(this)
 
     @Suppress("unused")
-    enum class UseSiteTarget(renderName: String? = null) {
-        FIELD,
-        FILE,
-        PROPERTY,
+    enum class UseSiteTarget(val renderName: String) {
+        FIELD("field"),
+        FILE("file"),
+        PROPERTY("property"),
         PROPERTY_GETTER("get"),
         PROPERTY_SETTER("set"),
-        RECEIVER,
+        RECEIVER("receiver"),
         CONSTRUCTOR_PARAMETER("param"),
         SETTER_PARAMETER("setparam"),
-        PROPERTY_DELEGATE_FIELD("delegate");
-
-        val renderName: String = renderName ?: name.lowercase()
+        PROPERTY_DELEGATE_FIELD("delegate")
     }
 }