[FIR] Partial implementation of DEPRECATION(_ERROR) diagnostics

No support for inheritance deprecations
and deprecations in qualifier's parts

compiler/fir/cones/src/org/jetbrains/kotlin/fir/utils/ArrayMap.kt

@@ -72,16 +72,17 @@ internal class OneElementArrayMap<T : Any>(val value: T, val index: Int) : Array
 }
 
 internal class ArrayMapImpl<T : Any> private constructor(
-    private var data: Array<Any?>
+    private var data: Array<Any?>,
+    initialSize: Int
 ) : ArrayMap<T>() {
     companion object {
         private const val DEFAULT_SIZE = 20
         private const val INCREASE_K = 2
     }
 
-    constructor() : this(arrayOfNulls<Any>(DEFAULT_SIZE))
+    constructor() : this(arrayOfNulls<Any>(DEFAULT_SIZE), 0)
 
-    override var size: Int = 0
+    override var size: Int = initialSize
         private set
 
 
@@ -104,7 +105,7 @@ internal class ArrayMapImpl<T : Any> private constructor(
         return data.getOrNull(index) as T?
     }
 
-    override fun copy(): ArrayMap<T> = ArrayMapImpl(data.copyOf())
+    override fun copy(): ArrayMap<T> = ArrayMapImpl(data.copyOf(), size)
 
     override fun iterator(): Iterator<T> {
         return object : AbstractIterator<T>() {