Unmute already worked tests and regenerate tests

compiler/testData/codegen/box/classes/kt2395.kt

@@ -1,5 +1,3 @@
-// TODO: Enable when JS backend supports Java class library
-// IGNORE_BACKEND: JS
 import java.util.AbstractList
 
 class MyList(): AbstractList<String>() {

compiler/testData/codegen/box/fieldRename/delegates.kt

@@ -1,6 +1,3 @@
-// TODO: muted automatically, investigate should it be ran for JS or not
-// IGNORE_BACKEND: JS
-
 import kotlin.reflect.KProperty
 
 public open class TestDelegate<T: Any>(private val initializer: () -> T) {

compiler/testData/codegen/box/objects/useImportedMember.kt

@@ -1,6 +1,3 @@
-// TODO: muted automatically, investigate should it be ran for JS or not
-// IGNORE_BACKEND: JS
-
 import C.f
 import C.p
 import C.ext

compiler/testData/codegen/box/objects/useImportedMemberFromCompanion.kt

@@ -1,6 +1,3 @@
-// TODO: muted automatically, investigate should it be ran for JS or not
-// IGNORE_BACKEND: JS
-
 import Class.C.f
 import Class.C.p
 import Class.C.ext

compiler/testData/codegen/box/properties/fieldInsideNested.kt

@@ -1,6 +1,3 @@
-// TODO: muted automatically, investigate should it be ran for JS or not
-// IGNORE_BACKEND: JS
-
 abstract class Your {
     abstract val your: String
 

compiler/testData/codegen/box/strings/kt3571.kt

@@ -1,6 +1,3 @@
-// TODO: muted automatically, investigate should it be ran for JS or not
-// IGNORE_BACKEND: JS
-
 class Thing(delegate: CharSequence) : CharSequence by delegate
   
 fun box(): String {

compiler/testData/codegen/box/strings/kt5956.kt

@@ -1,6 +1,3 @@
-// TODO: muted automatically, investigate should it be ran for JS or not
-// IGNORE_BACKEND: JS
-
 // KT-5956 java.lang.AbstractMethodError: test.Thing.subSequence(II)Ljava/lang/CharSequence
 
 class Thing(val delegate: CharSequence) : CharSequence {