Alien weeds GC issue

[GDNgit]

[2022-10-09T02:07:31] Beginning search for references to a /obj/structure/alien/weeds/node. [2022-10-09T02:07:31] Finished searching globals [2022-10-09T02:07:34] Found /obj/structure/alien/weeds/node [0x20071e8] in /obj/structure/alien/weeds's [0x2001708] linked_node var. World -> /obj/structure/alien/weeds [2022-10-09T02:07:34] Found /obj/structure/alien/weeds/node [0x20071e8] in /obj/structure/alien/weeds's [0x2001709] linked_node var. World -> /obj/structure/alien/weeds [2022-10-09T02:07:34] Found /obj/structure/alien/weeds/node [0x20071e8] in /obj/structure/alien/weeds's [0x2001749] linked_node var. World -> /obj/structure/alien/weeds [2022-10-09T02:07:41] Found /obj/structure/alien/weeds/node [0x20071e8] in /obj/structure/alien/weeds's [0x200670a] linked_node var. World -> /obj/structure/alien/weeds [2022-10-09T02:07:41] Found /obj/structure/alien/weeds/node [0x20071e8] in /obj/structure/alien/weeds's [0x200670e] linked_node var. World -> /obj/structure/alien/weeds [2022-10-09T02:07:41] Found /obj/structure/alien/weeds/node [0x20071e8] in /obj/structure/alien/weeds's [0x20067e0] linked_node var. World -> /obj/structure/alien/weeds [2022-10-09T02:07:42] Found /obj/structure/alien/weeds/node [0x20071e8] in /obj/structure/alien/weeds's [0x2006d3a] linked_node var. World -> /obj/structure/alien/weeds [2022-10-09T02:07:42] Found /obj/structure/alien/weeds/node [0x20071e8] in /obj/structure/alien/weeds's [0x2006df4] linked_node var. World -> /obj/structure/alien/weeds [2022-10-09T02:07:44] Found /obj/structure/alien/weeds/node [0x20071e8] in /obj/structure/alien/weeds's [0x20081fe] linked_node var. World -> /obj/structure/alien/weeds [2022-10-09T02:08:18] Found /obj/structure/alien/weeds/node [0x20071e8] in /obj/structure/alien/weeds's [0x20231ba] linked_node var. World -> /obj/structure/alien/weeds

TO REPRODUCE: Break a weed node after a weed spread from it

Extra information: weeds need a refactor, they're poorly handled and should be pushed out of life()