Hopefully fix subgamemodes from pushing rounds into extended. (#42744)

* Hopefully fix subgamemodes from hard locking rounds

* You'd revert this change, you potato...

Resources/Prototypes/GameRules/roundstart.yml

@@ -481,6 +481,46 @@
   - type: DynamicRuleCost
     cost: 200
 
+- type: entity
+  abstract: true
+  parent: BaseGameRule
+  id: BaseXenoborgsRule
+  components:
+  - type: XenoborgsRule
+  - type: RuleGrids
+  - type: LoadMapRule
+    gridPath: /Maps/Shuttles/mothership.yml
+
+- type: entity
+  parent: BaseXenoborgsRule
+  id: Xenoborgs
+  components:
+  - type: GameRule
+    minPlayers: 30
+  - type: AntagMultipleRoleSpawner
+    antagRoleToPrototypes:
+      MothershipCore: [ MothershipCore ]
+      Xenoborg: [ XenoborgEngi, XenoborgHeavy, XenoborgScout, XenoborgStealth ]
+    pickAndTake: true
+  - type: AntagSelection
+    selectionTime: PrePlayerSpawn
+    definitions:
+    - prefRoles: [ MothershipCore ]
+      fallbackRoles: [ Xenoborg ]
+      spawnerPrototype: SpawnPointGhostRoleMothershipCore
+      mindRoles:
+      - MindRoleMothershipCore
+    - prefRoles: [ Xenoborg ]
+      fallbackRoles: [ MothershipCore ]
+      spawnerPrototype: SpawnPointGhostRoleXenoborg
+      mindRoles:
+      - MindRoleXenoborg
+      min: 4
+      max: 4
+  - type: DynamicRuleCost
+    cost: 200
+
+
 # This rule makes the chosen players unable to get other antag rules, as a way to prevent metagaming job rolls.
 # Put this before antags assigned to station jobs, but after non-job antags (NukeOps/Wiz).
 - type: entity

Resources/Prototypes/GameRules/subgamemodes.yml

@@ -38,6 +38,8 @@
         sound: "/Audio/Misc/thief_greeting.ogg"
   - type: DynamicRuleCost
     cost: 75
+  - type: GameRule
+    cancelPresetOnTooFewPlayers: false
 
 # Needs testing
 - type: entity
@@ -72,15 +74,16 @@
         nameFormat: name-format-wizard
       mindRoles:
       - MindRoleWizard
+  - type: GameRule
+    cancelPresetOnTooFewPlayers: false
 
 - type: entity
-  parent: BaseGameRule
-  id: Xenoborgs
+  parent: BaseXenoborgsRule
+  id: SubXenoborgs
   components:
-  - type: XenoborgsRule
-  - type: RuleGrids
   - type: GameRule
     minPlayers: 30
+    cancelPresetOnTooFewPlayers: false
   - type: LoadMapRule
     gridPath: /Maps/_DV/Shuttles/Event/mothership_dv.yml #DeltaV - Was: /Maps/Shuttles/mothership.yml
   - type: AntagMultipleRoleSpawner