v30 nuke wars preparation: Disable boats & Team spawn zones (#3263)

## Description:

Preparation for nuke wars, for v30.
Next PR will be adding the nuke wars modifier for public games, but
Wonders https://github.com/openfrontio/OpenFrontIO/pull/3224 needs to be
merged first to avoid merge conflicts.

### 1. Disable boats setting

It's possible to disable `UnitType.TransportShip` now. Because they are
not needed in nuke wars and can even be annoying.

<img width="720" height="320" alt="image"
src="https://github.com/user-attachments/assets/661bc10d-b204-4b4f-b876-ee7c9b92de8c"
/>

### 2. Team spawn zones for random spawn

Maps can have `teamGameSpawnAreas` in their json file now.
Spawn areas are currently active if 
- a supported map is chosen (Baikal Nuke Wars or Four Islands)
- a supported team size is chosen (2 teams on Baikal Nuke Wars or 2/4
teams on Four Islands)
- random spawn is enabled

## 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:

FloPinguin

src/client/components/GameConfigSettings.ts

@@ -93,6 +93,7 @@ const unitOptions: { type: UnitType; translationKey: string }[] = [
   { type: UnitType.DefensePost, translationKey: "unit_type.defense_post" },
   { type: UnitType.Port, translationKey: "unit_type.port" },
   { type: UnitType.Warship, translationKey: "unit_type.warship" },
+  { type: UnitType.TransportShip, translationKey: "unit_type.boat" },
   { type: UnitType.MissileSilo, translationKey: "unit_type.missile_silo" },
   { type: UnitType.SAMLauncher, translationKey: "unit_type.sam_launcher" },
   { type: UnitType.AtomBomb, translationKey: "unit_type.atom_bomb" },