fix(AtomicWeakRate): added bool overrides for sparsity calculations

these allow the atomic weak rate to be used with the current sparsity code. Note also that this commit reintroduces the full weak reaction set which does introduce an enormouse degree of stiffness which will need to be filtered out. What this means is that this commit practically cannot evolve a network due to this stiffness

src/include/gridfire/reaction/weak/weak.h

@@ -473,6 +473,20 @@ namespace gridfire::rates::weak {
                 CppAD::vector<std::set<size_t>>& st
             ) override;
 
+            bool for_sparse_jac(
+                size_t q,
+                const CppAD::vector<bool> &r,
+                CppAD::vector<bool> &s,
+                const CppAD::vector<double> &x
+            ) override;
+
+            bool rev_sparse_jac(
+                size_t q,
+                const CppAD::vector<bool> &rt,
+                CppAD::vector<bool> &st,
+                const CppAD::vector<double> &x
+            ) override;
+
         private:
             const WeakRateInterpolator& m_interpolator;
             const size_t m_a;
@@ -536,7 +550,7 @@ namespace gridfire::rates::weak {
 
         T rateConstant = static_cast<T>(0.0);
         if constexpr (std::is_same_v<T, CppAD::AD<double>>) { // Case where T is an AD type
-            std::vector<T> ax = {T9, log_rhoYe, mue};
+            std::vector<T> ax = {T9, log_rhoYe};
             std::vector<T> ay(2);
             m_atomic(ax, ay);
             rateConstant = static_cast<T>(ay[0]);