Enables memory tracking (leak detection) in more unit tests

Signed-off-by: Esteban Papp <81431996+amznestebanpapp@users.noreply.github.com>

Code/Editor/Lib/Tests/test_EditorUtils.cpp

@@ -11,6 +11,7 @@
 #include <AzCore/base.h>
 #include <AzCore/Memory/SystemAllocator.h>
 #include <AzCore/Debug/TraceMessageBus.h>
+#include <AzCore/UnitTest/TestTypes.h>
 
 namespace EditorUtilsTest
 {
@@ -39,7 +40,7 @@ namespace EditorUtilsTest
 
 
     class TestWarningAbsorber
-        : public testing::Test
+        : public ::UnitTest::ScopedAllocatorSetupFixture
     {
     };