[K/N] keep internal members in header klibs

This is also the behavior of jvm-abi-gen and desired to support
friend modules.
^KT-65442

native/native.tests/testData/klib/header-klibs/comparison/topLevelPrivateMembers/base/utils.kt

@@ -1,12 +1,7 @@
 package test
 
-val publicVal = 0
-const val publicConst = 0
-fun publicFun() = 0
-
-internal val internalVal = 0
-internal const val internalConst = 0
-internal fun internalFun() = 0
+val publicVal = (0..10).random()
+fun publicFun() = (0..10).random()
 
 private val privateVal = 0
 private const val privateConst = 0