Fix createDataLoadingThunk and related actions (#30408)

app/javascript/mastodon/api.ts

@@ -62,12 +62,12 @@ export default function api(withAuthorization = true) {
 export async function apiRequest<ApiResponse = unknown>(
   method: Method,
   url: string,
-  params?: unknown,
+  params?: Record<string, unknown>,
 ) {
   const { data } = await api().request<ApiResponse>({
     method,
-    url,
-    params,
+    url: '/api/' + url,
+    data: params,
   });
 
   return data;