pluginClient: fetch ignores all query parameters

[nimo23]

What version of kubb is running?

3.3.4

What kind of platform do you use?

None

How does your kubb.config.ts config look like

pluginClient({
..
client: 'fetch',
operations: true,
paramsType: "inline",
pathParamsType: "inline",
dataReturnType: 'full'
}),

Swagger/OpenAPI file?

No response

What version of external packages are you using(@tanstack-query, MSW, React, Vue, ...)

React 19

What steps can reproduce the bug?

1. Use fetch client with RequestParam (e.g. /api/user/test?allFields=true (where test is the username)
2. You will see that all query parameters (after ?) are ignored

How often does this bug happen?

Every time

What is the expected behavior?

Query params should not be ignored

Additional information

Looking at Kubb's fetch.js code, the query parameters are not processed:

// src/clients/fetch.ts
var fetchClient = async (config) => {
  const response = await fetch([config.baseURL, config.url].filter(Boolean).join(""), {
    method: config.method.toUpperCase(),
    body: JSON.stringify(config.data),
    signal: config.signal,
    headers: config.headers
  });
  const data = await response.json();
  return {
    data,
    status: response.status,
    statusText: response.statusText
  };
};

For example, if you look at the code generated by orval, the query parameters are appended to the URL (which is not the case with kubb):

export const getGetUserByUsernameUrl = (username: string,
    params?: GetUserByUsernameParams,) => {
  const normalizedParams = new URLSearchParams();

  Object.entries(params || {}).forEach(([key, value]) => {
    
    if (value !== undefined) {
      normalizedParams.append(key, value === null ? 'null' : value.toString())
    }
  });

  return normalizedParams.size ? `/api/user/${username}?${normalizedParams.toString()}` : `/api/user/${username}`
}