Rev: Update "Japan and Neighbors" map to "East Asia" (#1007)

**Closes Issue #1001.**

_Will require updates to translations for each language but English is
in place as are pointers to relevant map files and thumbnails._

## Description:
All assets and references to the Japan and Neighbors map have been
updated to reflect East Asia.

**New Behavior**
![East Asia
Map](https://github.com/user-attachments/assets/64192590-bbb7-4408-a99b-7455de295d2b)

**Old Behavior**
![Japan and Neighbors named
map](https://github.com/user-attachments/assets/ba44dd56-1470-4c74-a70d-bd7fd8f3c795)

Game test is functioning. Other languages will need to be updated for
their displayed text to align.

## 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
- [x] I understand that submitting code with bugs that could have been
caught through manual testing blocks releases and new features for all
contributors

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

ajaxburger
_My git name is included in my nickname on the server._

---------

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

src/client/components/Maps.ts

@@ -22,7 +22,7 @@ export const MapDescription: Record<keyof typeof GameMapType, string> = {
   GatewayToTheAtlantic: "Gateway to the Atlantic",
   Australia: "Australia",
   Iceland: "Iceland",
-  Japan: "Japan",
+  EastAsia: "East Asia",
   BetweenTwoSeas: "Between Two Seas",
   FaroeIslands: "Faroe Islands",
   DeglaciatedAntarctica: "Deglaciated Antarctica",

src/client/utilities/Maps.ts

@@ -6,6 +6,7 @@ import betweenTwoSeas from "../../../resources/maps/BetweenTwoSeasThumb.webp";
 import blackSea from "../../../resources/maps/BlackSeaThumb.webp";
 import britannia from "../../../resources/maps/BritanniaThumb.webp";
 import deglaciatedAntarctica from "../../../resources/maps/DeglaciatedAntarcticaThumb.webp";
+import eastasia from "../../../resources/maps/EastAsiaThumb.webp";
 import europeClassic from "../../../resources/maps/EuropeClassicThumb.webp";
 import europe from "../../../resources/maps/EuropeThumb.webp";
 import falklandislands from "../../../resources/maps/FalklandIslandsThumb.webp";
@@ -13,7 +14,6 @@ import faroeislands from "../../../resources/maps/FaroeIslandsThumb.webp";
 import gatewayToTheAtlantic from "../../../resources/maps/GatewayToTheAtlanticThumb.webp";
 import halkidiki from "../../../resources/maps/HalkidikiThumb.webp";
 import iceland from "../../../resources/maps/IcelandThumb.webp";
-import japan from "../../../resources/maps/JapanThumb.webp";
 import mars from "../../../resources/maps/MarsThumb.webp";
 import mena from "../../../resources/maps/MenaThumb.webp";
 import northAmerica from "../../../resources/maps/NorthAmericaThumb.webp";
@@ -61,8 +61,8 @@ export function getMapsImage(map: GameMapType): string {
       return australia;
     case GameMapType.Iceland:
       return iceland;
-    case GameMapType.Japan:
-      return japan;
+    case GameMapType.EastAsia:
+      return eastasia;
     case GameMapType.BetweenTwoSeas:
       return betweenTwoSeas;
     case GameMapType.FaroeIslands: