[development] fix for a possible MSVC compiler bug (#6870)

Replaced a variable with the name "interface" to avoid conflict with MSVC keyword

Signed-off-by: AMZN-ScottR <24445312+AMZN-ScottR@users.noreply.github.com>

Code/Tools/AssetProcessor/native/tests/SourceFileRelocatorTests.cpp

@@ -793,9 +793,9 @@ namespace UnitTests
 
     TEST_F(SourceFileRelocatorTest, TestInterface)
     {
-        auto* interface = AZ::Interface<ISourceFileRelocation>::Get();
+        auto* sourceFileRelocator = AZ::Interface<ISourceFileRelocation>::Get();
 
-        ASSERT_NE(interface, nullptr);
+        ASSERT_NE(sourceFileRelocator, nullptr);
     }
 
     TEST_F(SourceFileRelocatorTest, Move_Real_Succeeds)