Fetcher with `paramsCasing: 'camelcase'` generates unused snake case variables

### What version of `kubb` is running? 4.37.0 ### What kind of platform do you use? Linux ### Your `kubb.config.ts` config file? ```typescript import { type Group, defineConfig } from '@kubb/core'; import { pluginClient } from '@kubb/plugin-client'; import { pluginOas } from '@kubb/plugin-oas'; import { pluginTs } from '@kubb/plugin-ts'; import { pluginZod } from '@kubb/plugin-zod'; const group: Group = { type: 'tag', name: ({ group: groupName }) => groupName, }; export default defineConfig({ name: 'example-app', root: '.', input: { path: '../openapi.json', }, output: { path: './src/__generated__', clean: true, extension: { '.ts': '' }, barrelType: 'named', }, plugins: [ pluginOas({ generators: [] }), pluginTs({ output: { path: 'types', banner }, group, enumType: 'literal', enumSuffix: '', integerType: 'number', unknownType: 'unknown', paramsCasing: 'camelcase', }), pluginZod({ output: { path: 'schemas', banner }, group, unknownType: 'unknown', version: '4', }), pluginClient({ output: { path: 'fetchers', banner }, group, dataReturnType: 'full', urlType: 'export', paramsType: 'object', paramsCasing: 'camelcase', pathParamsType: 'object', parser: 'zod', client: 'fetch', }), ], }); ``` ### Swagger/OpenAPI file? ```bash { "openapi": "3.1.0", "info": { "title": "example-app", "version": "0.0.0" }, "paths": { "/v1/items/{item_id}": { "get": { "tags": [ "Items" ], "summary": "Get Item", "operationId": "get_item", "parameters": [ { "name": "item_id", "in": "path", "required": true, "schema": { "type": "string", "format": "uuid", "title": "Item Id" } } ], "responses": { "200": { "description": "Successful Response", "content": { "application/json": { "schema": {} } } } } } } } } ``` ### What version of external packages are you using(`@tanstack-query`, `MSW`, `React`, `Vue`, ...) Irrelevant ### What steps can reproduce the bug? 1. Set TypeScript `noUnusedLocals` to `true`. 2. Use provided config and openapi spec to generate fetchers. 3. Observe that generated output contains unused variable `const item_id = itemId;` with the TypeScript error `'item_id' is declared but its value is never read. ts(6133)` ### How often does this bug happen? Every time ### What is the expected behavior? Skip outputting the variable altogether, since the fetcher accepts the camelcased variant. ### Additional information Kubb `v4.20.5` is the last version I could find that doesn't display this bug