Improve random spawn (#2503)

## Description:

This is a previously approved PR with an additional commit that fixes
case when nations change spawn & jump around, their previous territory
wasn't getting deleted.

## Please complete the following:

- [x] I have added screenshots for all UI updates
- [x] I process any text displayed to the user through translateText()
and I've added it to the en.json file
- [x] I have added relevant tests to the test directory
- [x] I confirm I have thoroughly tested these changes and take full
responsibility for any bugs introduced

## Please put your Discord username so you can be contacted if a bug or
regression is found:

nikolaj_mykola

---------

Co-authored-by: Evan <evanpelle@gmail.com>

tests/core/game/GameImpl.test.ts

@@ -1,3 +1,4 @@
+import { GameID } from "../../../src/core/Schemas";
 import { AttackExecution } from "../../../src/core/execution/AttackExecution";
 import { SpawnExecution } from "../../../src/core/execution/SpawnExecution";
 //import { TransportShipExecution } from "../../../src/core/execution/TransportShipExecution";
@@ -12,6 +13,7 @@ import {
 import { TileRef } from "../../../src/core/game/GameMap";
 import { setup } from "../../util/Setup";
 
+const gameID: GameID = "game_id";
 let game: Game;
 let attacker: Player;
 let defender: Player;
@@ -44,8 +46,16 @@ describe("GameImpl", () => {
     attackerSpawn = game.ref(0, 14);
 
     game.addExecution(
-      new SpawnExecution(game.player(attackerInfo.id).info(), attackerSpawn),
-      new SpawnExecution(game.player(defenderInfo.id).info(), defenderSpawn),
+      new SpawnExecution(
+        gameID,
+        game.player(attackerInfo.id).info(),
+        attackerSpawn,
+      ),
+      new SpawnExecution(
+        gameID,
+        game.player(defenderInfo.id).info(),
+        defenderSpawn,
+      ),
     );
 
     while (game.inSpawnPhase()) {