Fix: Incorrect save/load array size of Town::cargo_accepted

In 11ab3c4e the number of cargo types was changed from 32 to 64.
The save/load of Town::cargo_accepted was not updated, such that
only half of the data structure is saved/loaded in savegame versions
199 to 218.
Discard and regenerate data from all savegame versions prior to 219.

src/saveload/afterload.cpp

@@ -2830,7 +2830,7 @@ bool AfterLoadGame()
 	 * which is done by StartupEngines(). */
 	if (gcf_res != GLC_ALL_GOOD) StartupEngines();
 
-	if (IsSavegameVersionBefore(SLV_166)) {
+	if (IsSavegameVersionBefore(SLV_FIX_TOWN_ACCEPTANCE)) {
 		/* Update cargo acceptance map of towns. */
 		for (TileIndex t = 0; t < map_size; t++) {
 			if (!IsTileType(t, MP_HOUSE)) continue;