Bring dev pattern back (#3495)

## Description:

Dev pattern support was removed in
97d0a05d58
This PR brings it back to allow testing new skins.

## 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:

deshack_82603

src/client/Cosmetics.ts

@@ -178,6 +178,7 @@ export async function getPlayerCosmetics(): Promise<PlayerCosmetics> {
 
   if (refs.patternName && cosmetics) {
     const pattern = cosmetics.patterns[refs.patternName];
+
     if (pattern) {
       result.pattern = {
         name: refs.patternName,
@@ -187,6 +188,16 @@ export async function getPlayerCosmetics(): Promise<PlayerCosmetics> {
           : undefined,
       };
     }
+  } else {
+    const devPattern = new UserSettings().getDevOnlyPattern();
+
+    if (devPattern) {
+      result.pattern = {
+        name: devPattern.name,
+        patternData: devPattern.patternData,
+        colorPalette: devPattern.colorPalette,
+      };
+    }
   }
 
   return result;