fix compile error

Author: MClemot

core/base/delaunayRipsPersistenceDiagram/geoPH3.h

@@ -953,7 +953,8 @@ namespace ttk::gph {
 
     void compute1PH(MultidimensionalDiagram &ph) {
       omp_set_num_threads(nThreads_);
-      const ConnectivityHashMap sequential_msa_edges = std::move(msa_edges);
+      const boost::unordered_flat_map sequential_msa_edges
+        = std::move(msa_edges);
 
       const unsigned N_msa = msa.size();
       std::vector<int> polys;
@@ -1054,7 +1055,7 @@ namespace ttk::gph {
     void compute1PH(MultidimensionalDiagram &ph,
                     std::vector<Generator1> &generators1) {
       omp_set_num_threads(nThreads_);
-      ConnectivityHashMap sequential_msa_edges = std::move(msa_edges);
+      boost::unordered_flat_map sequential_msa_edges = std::move(msa_edges);
 
       const unsigned N_msa = msa.size();
       std::vector<int> polys;

core/base/delaunayRipsPersistenceDiagram/geoPHd.h

@@ -778,7 +778,7 @@ namespace ttk::gph {
       MSA[poly] = max(MSA[poly], MSA[x]);
     }
 
-    const ConnectivityHashMap<minus1(D)> msa_connectivity
+    const boost::unordered_flat_map msa_connectivity
       = std::move(concurrent_msa_connectivity);
 
     /* Graph critical -- polytope */