[MIRROR] Fixes bombproof containers not protecting their content in some cases (#5844)

* added get content recursive flag check (#59191)

* Fixes bombproof containers not protecting their content in some cases

Co-authored-by: Mickyan <38563876+Mickyan@users.noreply.github.com>

code/__HELPERS/unsorted.dm

@@ -427,12 +427,13 @@ Turf and target are separate in case you want to teleport some distance from a t
 
 
 ///Returns the src and all recursive contents as a list.
-/atom/proc/GetAllContents()
+/atom/proc/GetAllContents(ignore_flag_1)
 	. = list(src)
 	var/i = 0
 	while(i < length(.))
 		var/atom/A = .[++i]
-		. += A.contents
+		if (!(A.flags_1 & ignore_flag_1))
+			. += A.contents
 
 ///identical to getallcontents but returns a list of atoms of the type passed in the argument.
 /atom/proc/get_all_contents_type(type)

code/controllers/subsystem/explosions.dm

@@ -354,7 +354,7 @@ SUBSYSTEM_DEF(explosions)
 			for(var/I in T)
 				var/atom/A = I
 				if (length(A.contents) && !(A.flags_1 & PREVENT_CONTENTS_EXPLOSION_1)) //The atom/contents_explosion() proc returns null if the contents ex_acting has been handled by the atom, and TRUE if it hasn't.
-					items += A.GetAllContents()
+					items += A.GetAllContents(ignore_flag_1 = PREVENT_CONTENTS_EXPLOSION_1)
 			for(var/thing in items)
 				var/atom/movable/movable_thing = thing
 				if(QDELETED(movable_thing))