nvcc compiler should be EDG-based, but fails test (#1818)

Our nvcc compilers (10.1.243 and 9.2.X) do not define the correct value for `FMT_USE_UDL_TEMPLATE` and then end up with an error later on in the build.  Explicitly search for `__NVCC__` symbol not being defined.   Might want to instead use `FMT_NVCC` or some other check, but the raw `__EDG_VERSION__` check is not working correctly for nvcc.

include/fmt/format.h

@@ -145,7 +145,7 @@ FMT_END_NAMESPACE
       (!defined(__EDG_VERSION__) || __EDG_VERSION__ >= 501) && \
       ((FMT_GCC_VERSION >= 604 && __cplusplus >= 201402L) ||   \
        FMT_CLANG_VERSION >= 304) &&                            \
-      !defined(__PGI)
+      !defined(__PGI) && !defined(__NVCC__)
 #    define FMT_USE_UDL_TEMPLATE 1
 #  else
 #    define FMT_USE_UDL_TEMPLATE 0