Revert variable name (fix broken build on android) (#5715)

Co-authored-by: Steve M <[email protected]>

code/AssetLib/USD/USDLoaderImplTinyusdz.cpp

@@ -72,7 +72,7 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #include "../../../contrib/tinyusdz/assimp_tinyusdz_logging.inc"
 
 namespace {
-    static constexpr char Tag[] = "tinyusdz loader";
+    static constexpr char TAG[] = "tinyusdz loader";
 }
 
 namespace Assimp {