Remove unused processName util and twemoji dependency (#1683)

## Description:
This PR removes the unused `processName` utility function from `Util.ts`
and its dependency, the `twemoji` package.

The `processName` function has been commented out and non-operational
for approximately 9 months. This cleanup removes the dead code. As a
result, the `twemoji` npm package is no longer needed and has been
removed from the project's dependencies, which slightly reduces the
overall dependency footprint.

## 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 have read and accepted the CLA agreement (only required once).

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

aaa4xu

src/core/Util.ts

@@ -1,6 +1,5 @@
 import DOMPurify from "dompurify";
 import { customAlphabet } from "nanoid";
-import twemoji from "twemoji";
 import { Cell, Unit } from "./game/Game";
 import { GameMap, TileRef } from "./game/GameMap";
 import {
@@ -142,39 +141,6 @@ export function sanitize(name: string): string {
     .replace(/[^\p{L}\p{N}\s\p{Emoji}\p{Emoji_Component}[\]_]/gu, "");
 }
 
-export function processName(name: string): string {
-  // First sanitize the raw input - strip everything except text and emojis
-  const sanitizedName = sanitize(name);
-  // Process emojis with twemoji
-  const withEmojis = twemoji.parse(sanitizedName, {
-    base: "https://cdn.jsdelivr.net/gh/twitter/twemoji@14.0.2/assets/",
-    folder: "svg",
-    ext: ".svg",
-  });
-
-  // Add CSS styles inline to the wrapper span
-  const styledHTML = `
-        <span class="player-name" style="
-            display: inline-flex;
-            align-items: center;
-            gap: 0.25rem;
-            font-weight: 500;
-            vertical-align: middle;
-        ">
-            ${withEmojis}
-        </span>
-    `;
-
-  // Add CSS for the emoji images
-  const withEmojiStyles = styledHTML.replace(
-    /<img/g,
-    '<img style="height: 1.2em; width: 1.2em; vertical-align: -0.2em; margin: 0 0.05em 0 0.1em;"',
-  );
-
-  // Sanitize the final HTML, allowing styles and specific attributes
-  return onlyImages(withEmojiStyles);
-}
-
 export function onlyImages(html: string) {
   return DOMPurify.sanitize(html, {
     ALLOWED_TAGS: ["span", "img"],

src/core/game/PlayerImpl.ts

@@ -112,7 +112,7 @@ export class PlayerImpl implements Player {
     this._name = sanitizeUsername(playerInfo.name);
     this._troops = toInt(startTroops);
     this._gold = 0n;
-    this._displayName = this._name; // processName(this._name)
+    this._displayName = this._name;
     this._pseudo_random = new PseudoRandom(simpleHash(this.playerInfo.id));
   }