Merge pull request PowerGridModel#1258 from PowerGridModel/feature/more-reliability-fix

Sonar issues: fix one more reliability issue

Author: mgovers

power_grid_model_c/power_grid_model/include/power_grid_model/topology.hpp

@@ -556,7 +556,8 @@ class Topology {
         std::ranges::for_each(math_topology_,
                               [](MathModelTopology& topo) { topo.load_gen_type.resize(topo.n_load_gen()); });
         // assign load type
-        for (auto const& [idx_math, load_gen_type] : std::views::zip(comp_coup_.load_gen, comp_topo_.load_gen_type)) {
+        for (auto const& [idx_math, load_gen_type] :
+             std::views::zip(std::as_const(comp_coup_.load_gen), std::as_const(comp_topo_.load_gen_type))) {
             if (idx_math.group == -1) {
                 continue;
             }