fix#1500: строгое сравнение значений при поиске

Author: Mr-Rm

src/OneScript.Core/Values/IValue.cs

@@ -18,4 +18,9 @@ public interface IValue : IComparable<IValue>, IEquatable<IValue>
         IValue GetRawValue();
     }
 
+    public static class IValueExtension
+    {
+        public static bool StrictEquals(this IValue value, IValue other)
+            => value.Equals(other) && value.SystemType == other.SystemType;
+    }
 }

src/OneScript.StandardLibrary/Collections/ArrayImpl.cs

@@ -113,7 +113,7 @@ public void Insert(int index, IValue value = null)
         [ContextMethod("Найти", "Find")]
         public IValue Find(IValue what)
         {
-            var idx = _values.FindIndex(x => x.Equals(what));
+            var idx = _values.FindIndex(x => x.StrictEquals(what));
             if(idx < 0)
             {
                 return ValueFactory.Create();