update shouldRetry429 condition

Author: cyfung1031

packages/filesystem/limiter.ts

@@ -56,8 +56,8 @@ export class RateLimiter {
         return await fn();
       } catch (error) {
         // 检查错误字符串中是否包含 429
-        const errorStr = String(error);
-        if (this.shouldRetry429(op, errorStr) && i < 10) {
+        const errorStr = String(error).toLowerCase();
+        if (this.shouldRetry429(op, ` ${errorStr} `) && i < 10) {
           // 遇到 429 错误且未达到重试上限，采用指数退避策略延迟后继续重试
           const delay = Math.min(2000 * Math.pow(2, i), 60000);
           await new Promise((resolve) => setTimeout(resolve, delay));
@@ -73,8 +73,7 @@ export class RateLimiter {
 
   private shouldRetry429(op: string, errorStr: string): boolean {
     return (
-      ((errorStr.includes("429") && /[^A-Za-z\d]429[^A-Za-z\d]/.test(` ${errorStr} `)) ||
-        errorStr.toLowerCase().includes("too many requests")) &&
+      ((errorStr.includes("429") && /[^a-z\d]429[^a-z\d]/.test(errorStr)) || errorStr.includes("too many requests")) &&
       RETRYABLE_429_OPS.has(op)
     );
   }