Fix: next 67 savegame versions are used in PatchPacks; skip them (#8411)

Various of PatchPacks (Spring 2013, Joker, ChillPP) used versions
slightly higher than ours. Of course, as time went by, this
caught up with us, and we are now almost pushing a new version
that would conflict with them. To avoid users creating unneeded
issues about "why can I not load my savegame", lets be ahead of
the curve and flat-out refuse to load them.

Version-wise, this is totally fine. We have ~32k versions to go
before we run out (0x8000 is masked by JGRPP; we should avoid
using that). At the rate we bump savegames, this is not going to
happen in any sane reality.

(cherry picked from commit d8c8f4e72d)

src/lang/english.txt

@@ -5282,6 +5282,7 @@ STR_GAME_SAVELOAD_ERROR_TOO_NEW_SAVEGAME                        :Savegame is mad
 STR_GAME_SAVELOAD_ERROR_FILE_NOT_READABLE                       :File not readable
 STR_GAME_SAVELOAD_ERROR_FILE_NOT_WRITEABLE                      :File not writeable
 STR_GAME_SAVELOAD_ERROR_DATA_INTEGRITY_CHECK_FAILED             :Data integrity check failed
+STR_GAME_SAVELOAD_ERROR_PATCHPACK                               :Savegame is made with a modified version
 STR_GAME_SAVELOAD_NOT_AVAILABLE                                 :<not available>
 STR_WARNING_LOADGAME_REMOVED_TRAMS                              :{WHITE}Game was saved in version without tram support. All trams have been removed