[K2] Properly serialize constant values

#KT-56190 Fixed

native/native.tests/testData/klibContents/builtinsSerializer/compileTimeConstants.kt

@@ -1,5 +1,5 @@
-// KT-56190 K2 does not emit const initializers
 // MUTED_WHEN: K2
+// `val b = a + 20` will not be serialized in K2
 package test
 
 enum class Weapon {

native/native.tests/testData/klibContents/builtinsSerializer/nestedClassesAndObjects.kt

@@ -1,5 +1,3 @@
-// KT-56190 K2 does not emit const initializers
-// MUTED_WHEN: K2
 package test
 
 class ClassA {
@@ -18,7 +16,9 @@ class ClassA {
     inner class classC {
         val memberFromC: Int = 200
     }
+}
 
+class E {
     companion object {
         val stat: Int = 250
 
@@ -26,7 +26,9 @@ class ClassA {
             val memberFromD: Int = 275
         }
     }
+}
 
+class F {
     object ObjA {
         val memberFromObjA: Int = 300
     }

native/native.tests/testData/klibContents/builtinsSerializer/nestedClassesAndObjects.txt

@@ -1,13 +1,4 @@
     class ClassA constructor() {
-        companion object {
-            val stat: Int = 250
-            class D constructor() {
-                val memberFromD: Int = 275
-            }
-        }
-        object ObjA {
-            val memberFromObjA: Int = 300
-        }
         class classB constructor() {
             fun memberFromB(): Int
             class BC constructor() {
@@ -20,4 +11,17 @@
         inner class classC constructor() {
             val memberFromC: Int = 200
         }
+    }
+    class E constructor() {
+        companion object {
+            val stat: Int = 250
+            class D constructor() {
+                val memberFromD: Int = 275
+            }
+        }
+    }
+    class F constructor() {
+        object ObjA {
+            val memberFromObjA: Int = 300
+        }
     }

native/native.tests/testData/klibContents/builtinsSerializer/propertyAccessorAnnotations.kt

@@ -1,5 +1,3 @@
-// KT-56190 K2 does not emit const initializers
-// MUTED_WHEN: K2
 package test
 
 annotation class Anno(val value: String)