Currently this functionality not used, but soon planned be used
in connection wiht map persistent state specific pool system data.
In different from grid spawn data stored in ObjectMgr and used for global
(comon for all map copies) spawns from DB data or from gameevent system,
map locla spawn data used for independet grid spawns like expected to be
for pool system case when it will work in full power in instances.
Maybe for something other, like script dependent "static" spawns
not dependent from grid load state.
* Map Persistent noe have direct pointer back to map if map loaded.
That let simplify some code and avoid map search.
* Crash showup in result changes in code logic related to reset processing.
* Also fix more old bug with reset normal dungeon with not loaded map.
* Reverse MapPersistentState::HasRespawnTimes and MapPersistentState::HasBounds() results
to expected for function names and update related calls.
Thanks to Schmoozerd for help in research problem.
