FIR: handle named argument properly during annotation serialization

compiler/testData/codegen/box/fir/namedArgumentOnTypeAnnotation.kt

@@ -0,0 +1,29 @@
+// TARGET_BACKEND: JVM_IR
+// FILE: Nls.java
+
+import java.lang.annotation.Documented;
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+@Documented
+@Retention(RetentionPolicy.CLASS)
+@Target({ElementType.METHOD, ElementType.FIELD, ElementType.PARAMETER, ElementType.LOCAL_VARIABLE, ElementType.TYPE_USE, ElementType.TYPE, ElementType.PACKAGE})
+public @interface Nls {
+
+    enum Capitalization {
+        NotSpecified,
+        Title,
+        Sentence
+    }
+
+    Capitalization capitalization() default Capitalization.NotSpecified;
+}
+
+
+// FILE: box.kt
+
+fun foo(arg: @Nls(capitalization = Nls.Capitalization.Sentence) String) = arg
+
+fun box() = foo("OK")