eslint: Prefer type.array() over z.array(type) (#1810)

## Description:

Prefer `type.array()` over `z.array(type)`.

## 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

src/core/CosmeticSchemas.ts

@@ -25,7 +25,7 @@ export const CosmeticsSchema = z.object({
         z.string(),
         z.object({
           name: z.string(),
-          flares: z.array(z.string()).optional(),
+          flares: z.string().array().optional(),
         }),
       ),
       color: z.record(
@@ -33,7 +33,7 @@ export const CosmeticsSchema = z.object({
         z.object({
           color: z.string(),
           name: z.string(),
-          flares: z.array(z.string()).optional(),
+          flares: z.string().array().optional(),
         }),
       ),
     })