fix(client): preserve URL params already embedded in path

Author: stainless-app[bot]

src/core.ts

@@ -538,8 +538,9 @@ export abstract class APIClient {
       : new URL(baseURL + (baseURL.endsWith('/') && path.startsWith('/') ? path.slice(1) : path));
 
     const defaultQuery = this.defaultQuery();
-    if (!isEmptyObj(defaultQuery)) {
-      query = { ...defaultQuery, ...query } as Req;
+    const pathQuery = Object.fromEntries(url.searchParams);
+    if (!isEmptyObj(defaultQuery) || !isEmptyObj(pathQuery)) {
+      query = { ...pathQuery, ...defaultQuery, ...query } as Req;
     }
 
     if (typeof query === 'object' && query && !Array.isArray(query)) {