fix: gcc-15 bug workaround and hopefully a compile-time improvement

Resolves #702

Author: mpusz

src/core/include/mp-units/framework/dimension_concepts.h

@@ -42,7 +42,7 @@ struct dimension_interface;
  * Satisfied by all dimension types in the library.
  */
 MP_UNITS_EXPORT template<typename T>
-concept Dimension = detail::SymbolicConstant<T> && std::derived_from<T, detail::dimension_interface>;
+concept Dimension = std::derived_from<T, detail::dimension_interface> && detail::SymbolicConstant<T>;
 
 MP_UNITS_EXPORT template<symbol_text Symbol>
 struct base_dimension;

src/core/include/mp-units/framework/quantity_point_concepts.h

@@ -65,7 +65,7 @@ struct point_origin_interface;
  * Satisfied by either quantity points or by all types derived from `absolute_point_origin` class template.
  */
 MP_UNITS_EXPORT template<typename T>
-concept PointOrigin = detail::SymbolicConstant<T> && std::derived_from<T, detail::point_origin_interface>;
+concept PointOrigin = std::derived_from<T, detail::point_origin_interface> && detail::SymbolicConstant<T>;
 
 /**
  * @brief A concept matching all quantity point origins for a specified quantity type in the library

src/core/include/mp-units/framework/quantity_spec_concepts.h

@@ -36,7 +36,7 @@ struct quantity_spec_interface_base;
 }
 
 MP_UNITS_EXPORT template<typename T>
-concept QuantitySpec = detail::SymbolicConstant<T> && std::derived_from<T, detail::quantity_spec_interface_base>;
+concept QuantitySpec = std::derived_from<T, detail::quantity_spec_interface_base> && detail::SymbolicConstant<T>;
 
 template<typename Q>
 struct kind_of_;

src/core/include/mp-units/framework/unit_concepts.h

@@ -42,7 +42,7 @@ struct unit_interface;
  * Satisfied by all unit types provided by the library.
  */
 MP_UNITS_EXPORT template<typename T>
-concept Unit = detail::SymbolicConstant<T> && std::derived_from<T, detail::unit_interface>;
+concept Unit = std::derived_from<T, detail::unit_interface> && detail::SymbolicConstant<T>;
 
 MP_UNITS_EXPORT template<symbol_text Symbol, auto...>
 struct named_unit;

src/core/include/mp-units/framework/unit_magnitude_concepts.h

@@ -52,7 +52,7 @@ template<auto... Ms>
 struct unit_magnitude;
 
 template<typename T>
-constexpr bool is_mag_constant = detail::SymbolicConstant<T> && is_derived_from_specialization_of_v<T, mag_constant>;
+constexpr bool is_mag_constant = is_derived_from_specialization_of_v<T, mag_constant> && detail::SymbolicConstant<T>;
 
 }  // namespace detail