Replace all occurrences of WITH_RUNTIME with WITH_STDLIB

We are going to deprecate `WITH_RUNTIME` directive. The main reason
behind this change is that `WITH_STDLIB` directive better describes
its meaning, specifically it will add kotlin stdlib to test's classpath.

compiler/testData/codegen/box/ir/anonymousClassLeak.kt

@@ -1,6 +1,6 @@
 // IGNORE_BACKEND: WASM
 // WASM_MUTE_REASON: STDLIB_LAZY
-// WITH_RUNTIME
+// WITH_STDLIB
 
 // MODULE: lib
 // FILE: lib.kt

compiler/testData/codegen/box/ir/anonymousObjectInForLoopIteratorAndBody.kt

@@ -1,4 +1,4 @@
-// WITH_RUNTIME
+// WITH_STDLIB
 
 fun box(): String {
     var result = ""

compiler/testData/codegen/box/ir/classInitializers.kt

@@ -1,4 +1,4 @@
-//WITH_RUNTIME
+// WITH_STDLIB
 import kotlin.test.assertEquals
 
 class Test(val x: Int) {

compiler/testData/codegen/box/ir/enumClass.kt

@@ -1,4 +1,4 @@
-//WITH_RUNTIME
+// WITH_STDLIB
 
 import kotlin.test.assertEquals
 

compiler/testData/codegen/box/ir/enumClass2.kt

@@ -1,4 +1,4 @@
-//WITH_RUNTIME
+// WITH_STDLIB
 import kotlin.test.assertEquals
 
 enum class TestEnumClass(val x: Int) {

compiler/testData/codegen/box/ir/enumClass3.kt

@@ -1,4 +1,4 @@
-//WITH_RUNTIME
+// WITH_STDLIB
 import kotlin.test.assertEquals
 
 enum class TestEnumClass {

compiler/testData/codegen/box/ir/fileClassInitializers.kt

@@ -1,4 +1,4 @@
-//WITH_RUNTIME
+// WITH_STDLIB
 import kotlin.test.assertEquals
 
 val x = 1

compiler/testData/codegen/box/ir/lambdaWithLoop.kt

@@ -1,4 +1,4 @@
-// WITH_RUNTIME
+// WITH_STDLIB
 
 fun fooInt(b: (Int, Int) -> String): String {
     return b(3, 5)

compiler/testData/codegen/box/ir/serializationRegressions/anonFakeOverride.kt

@@ -1,5 +1,5 @@
 // KJS_WITH_FULL_RUNTIME
-// WITH_RUNTIME
+// WITH_STDLIB
 
 // extracted case from KT-48912