Add PackedRealArray as an alias for PackedFloat(32/64)Array

(cherry picked from commit 646c71c2773b859b2e5f62d400dfe439164fe933)

include/godot_cpp/variant/variant.hpp

@@ -356,6 +356,12 @@ String vformat(const String &p_text, const VarArgs... p_args) {
 
 #include <godot_cpp/variant/builtin_vararg_methods.hpp>
 
+#ifdef REAL_T_IS_DOUBLE
+using PackedRealArray = PackedFloat64Array;
+#else
+using PackedRealArray = PackedFloat32Array;
+#endif // REAL_T_IS_DOUBLE
+
 } // namespace godot
 
 #endif // GODOT_VARIANT_HPP