Avoid using Assert.assertSame for enums and primitive types

There is a difference in how Java and .NET implement this assertion
and it does not make a lot of sense for primitives or enums anyway

DEVSIX-3585

Autoported commit.
Original commit hash: [9373d7a09]

Author: Snipx

itext.tests/itext.kernel.tests/itext/kernel/pdf/PdfTokenizerTest.cs

@@ -216,17 +216,17 @@ public virtual void PrimitivesTest() {
             NUnit.Framework.Assert.AreEqual(tok.GetTokenType(), PdfTokenizer.TokenType.StartArray);
             tok.NextValidToken();
             NUnit.Framework.Assert.AreEqual(tok.GetTokenType(), PdfTokenizer.TokenType.String);
-            NUnit.Framework.Assert.AreEqual(tok.IsHexString(), true);
+            NUnit.Framework.Assert.IsTrue(tok.IsHexString());
             PdfString str = new PdfString(tok.GetByteContent(), tok.IsHexString());
             NUnit.Framework.Assert.AreEqual("some hex string ", str.GetValue());
             tok.NextValidToken();
             NUnit.Framework.Assert.AreEqual(tok.GetTokenType(), PdfTokenizer.TokenType.String);
-            NUnit.Framework.Assert.AreEqual(tok.IsHexString(), false);
+            NUnit.Framework.Assert.IsFalse(tok.IsHexString());
             str = new PdfString(tok.GetByteContent(), tok.IsHexString());
             NUnit.Framework.Assert.AreEqual("some simple string ", str.GetValue());
             tok.NextValidToken();
             NUnit.Framework.Assert.AreEqual(tok.GetTokenType(), PdfTokenizer.TokenType.String);
-            NUnit.Framework.Assert.AreEqual(tok.IsHexString(), true);
+            NUnit.Framework.Assert.IsTrue(tok.IsHexString());
             str = new PdfString(tok.GetByteContent(), tok.IsHexString());
             NUnit.Framework.Assert.AreEqual("\u008C%G\u00D5\u008DK\u00D2\u00C6\u00F3\u00D3+\u0083\u000B\u00E3%\u009D "
                 , str.GetValue());

port-hash

@@ -1 +1 @@
-c262a8c31c7bf350c67195662137804dddbf5bb8
+9373d7a094dbea20c5af5b765951ab6f9217a49b