Update checks for dynamic_cast usage when compiled with no rtti (#3963)

* Rename FMT_USE_TYPEID to FMT_HAS_RTTI and use it as check to enable dynamic_cast usage

* FMT_HAS_RTTI->FMT_USE_RTTI

include/fmt/base.h

@@ -279,6 +279,17 @@ import std;
 #  define FMT_UNICODE 1
 #endif
 
+// Check if rtti is available.
+#ifndef FMT_USE_RTTI
+// __RTTI is for EDG compilers. _CPPRTTI is for MSVC.
+#  if defined(__GXX_RTTI) || FMT_HAS_FEATURE(cxx_rtti) || defined(_CPPRTTI) || \
+      defined(__INTEL_RTTI__) || defined(__RTTI)
+#    define FMT_USE_RTTI 1
+#  else
+#    define FMT_USE_RTTI 0
+#  endif
+#endif
+
 #define FMT_FWD(...) static_cast<decltype(__VA_ARGS__)&&>(__VA_ARGS__)
 
 // Enable minimal optimizations for more compact code in debug mode.