libstrat: convert to experimental new (super-accurate) sf allocation semantics

libraries/libstratosphere/source/erpt/srv/erpt_srv_main.cpp

@@ -24,6 +24,7 @@
 namespace ams::erpt::srv {
 
     lmem::HeapHandle g_heap_handle;
+    ams::sf::ExpHeapAllocator g_sf_allocator;
 
     namespace {
 
@@ -79,6 +80,8 @@ namespace ams::erpt::srv {
 
         R_ABORT_UNLESS(MountSystemSaveData());
 
+        g_sf_allocator.Attach(g_heap_handle);
+
         for (auto i = 0; i < CategoryId_Count; i++) {
             Context *ctx = new Context(static_cast<CategoryId>(i), 1);
             AMS_ABORT_UNLESS(ctx != nullptr);