Copy to interface just companion object public const properties

compiler/testData/asJava/lightClasses/nullabilityAnnotations/TraitClassObjectField.java

@@ -8,6 +8,9 @@ public interface TraitClassObjectField {
         private final java.lang.String x = "";
         private final java.lang.String y = "";
 
+        /**
+         * @deprecated
+         */
         @org.jetbrains.annotations.Nullable
         public final java.lang.String getX() { /* compiled code */ }
 

compiler/testData/asJava/lightClasses/nullabilityAnnotations/TraitClassObjectField.kt

@@ -2,7 +2,7 @@
 
 interface TraitClassObjectField {
     companion object {
-        val x: String? = ""
+        const val x: String? = ""
         private val y: String? = ""
     }
 }