KT-54739 Return single empty inst from collection builders(all src-sets)

Fixed remaining builders, added additional checks to a test.

^KT-54739 fixed

libraries/stdlib/native-wasm/src/kotlin/collections/ArrayList.kt

@@ -1,5 +1,5 @@
 /*
- * Copyright 2010-2018 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license
+ * Copyright 2010-2023 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license
  * that can be found in the LICENSE file.
  */
 
@@ -13,6 +13,9 @@ actual class ArrayList<E> private constructor(
     private val backingList: ArrayList<E>?,
     private val root: ArrayList<E>?
 ) : MutableList<E>, RandomAccess, AbstractMutableList<E>() {
+    private companion object {
+        private val Empty = ArrayList<Nothing>(0).also { it.isReadOnly = true }
+    }
 
     actual constructor() : this(10)
 
@@ -28,7 +31,7 @@ actual class ArrayList<E> private constructor(
         if (backingList != null) throw IllegalStateException() // just in case somebody casts subList to ArrayList
         checkIsMutable()
         isReadOnly = true
-        return this
+        return if (length > 0) this else Empty
     }
 
     override actual val size: Int

libraries/stdlib/native-wasm/src/kotlin/collections/HashMap.kt

@@ -1,5 +1,5 @@
 /*
- * Copyright 2010-2018 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license
+ * Copyright 2010-2023 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license
  * that can be found in the LICENSE file.
  */
 
@@ -52,7 +52,7 @@ actual class HashMap<K, V> private constructor(
     internal fun build(): Map<K, V> {
         checkIsMutable()
         isReadOnly = true
-        return this
+        return if (size > 0) this else EmptyHolder.value()
     }
 
     override actual fun isEmpty(): Boolean = _size == 0
@@ -488,6 +488,15 @@ actual class HashMap<K, V> private constructor(
         private fun computeShift(hashSize: Int): Int = hashSize.countLeadingZeroBits() + 1
     }
 
+    internal object EmptyHolder {
+        val value_ = HashMap<Nothing, Nothing>(0).also { it.isReadOnly = true }
+
+        fun <K, V> value(): HashMap<K, V> {
+            @Suppress("UNCHECKED_CAST")
+            return value_ as HashMap<K, V>
+        }
+    }
+
     internal open class Itr<K, V>(
             internal val map: HashMap<K, V>
     ) {

libraries/stdlib/native-wasm/src/kotlin/collections/HashSet.kt

@@ -1,5 +1,5 @@
 /*
- * Copyright 2010-2018 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license
+ * Copyright 2010-2023 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license
  * that can be found in the LICENSE file.
  */
 
@@ -8,6 +8,9 @@ package kotlin.collections
 actual class HashSet<E> internal constructor(
         private val backing: HashMap<E, *>
 ) : MutableSet<E>, kotlin.native.internal.KonanSet<E>, AbstractMutableSet<E>() {
+    private companion object {
+        private val Empty = HashSet(HashMap.EmptyHolder.value<Nothing, Nothing>())
+    }
 
     actual constructor() : this(HashMap<E, Nothing>())
 
@@ -23,7 +26,7 @@ actual class HashSet<E> internal constructor(
     @PublishedApi
     internal fun build(): Set<E> {
         backing.build()
-        return this
+        return if (size > 0) this else Empty
     }
 
     override actual val size: Int get() = backing.size