多个vendor时，基于Cpp Extension的自定义算子会找不到so

一、问题现象（附报错日志上下文）：
samples/operator/ascendc/0_introduction/1_add_frameworklaunch/CppExtensionInvocation下提供pytorch_npu_helper.hpp存在bug，会导致存在多个vendor时获取default_cust_opapi_lib失败，最终报错aclnnXXX or aclnnXXXGetWorkspaceSize not in libopapi.so, or libopapi.so not found。

```
   File "/....../cpp_ext/XXX_ops/custom_ops.py", line 73, in xxx_xxx_xxxx_xxxxxx_
     return torch.ops.xxx.xxx_xxx_xxxx_xxxxxx_(
            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   File "/usr/local/Python-3.11.4/lib/python3.11/site-packages/torch/_ops.py", line 692, in __call__
     return self._op(*args, **kwargs or {})
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 RuntimeError: aclnnXXX or aclnnXXXGetWorkspaceSize not in libopapi.so, or libopapi.sonot found.
```

```
1 inline void *GetOpApiFuncAddr(const char *apiName)
2 {
3     if (!g_custom_lib_path.empty()) {
4         for (auto &it : g_custom_lib_path) {
5             auto cust_opapi_lib = real_path(it + "/" + GetCustOpApiLibName());
6             if (cust_opapi_lib.empty()) {
7                 break;
8             }
9             auto custOpApiHandler = GetOpApiLibHandler(cust_opapi_lib.c_str());
10             if (custOpApiHandler != nullptr) {
11                 auto funcAddr = GetOpApiFuncAddrInLib(custOpApiHandler, GetCustOpApiLibName(), apiName);
12                 if (funcAddr != nullptr) {
13                     ASCEND_LOGI("%s is found in %s.", apiName, cust_opapi_lib.c_str());
14                     return funcAddr;
15                 }
16             }
17         }
18         ASCEND_LOGI("%s is not in custom lib.", apiName);
19     }
20 
21     if (!g_default_custom_lib_path.empty()) {
22         for (auto &it : g_default_custom_lib_path) {
23             auto default_cust_opapi_lib = real_path(it + "/" + GetCustOpApiLibName());
24             if (default_cust_opapi_lib.empty()) {
25                 break;
26             }
27             auto custOpApiHandler = GetOpApiLibHandler(default_cust_opapi_lib.c_str());
28             if (custOpApiHandler != nullptr) {
29                 auto funcAddr = GetOpApiFuncAddrInLib(custOpApiHandler, GetCustOpApiLibName(), apiName);
30                 if (funcAddr != nullptr) {
31                     ASCEND_LOGI("%s is found in %s.", apiName, default_cust_opapi_lib.c_str());
32                     return funcAddr;
33                 }
34             }
35         }
36         ASCEND_LOGI("%s is not in default custom lib.", apiName);
37     }
38 
39     static auto opApiHandler = GetOpApiLibHandler(GetOpApiLibName());
40     if (opApiHandler == nullptr) {
41         return nullptr;
42     }
43     return GetOpApiFuncAddrInLib(opApiHandler, GetOpApiLibName(), apiName);
44 }
```
 **代码第25行，当从第一个vendor没找到so时，应该继续往后找，而不是break退出。**

二、软件版本:
-- CANN 版本: 8.2.RC2
-- Pytorch版本: 2.1.0
-- Python 版本: 3.11.4
-- 操作系统版本: HCE2.0

三、测试步骤：
在/usr/local/Ascend/ascend-toolkit/latest/opp/vendors/config.ini中添加一个fake vendor，并将样例实际的vendor放在第二位，然后跑test

四、日志信息:
同问题现象

Ascend/samples

内容风险标识

评论 (2)

Ascend/samples .gitee-modal { width: 500px !important; }

内容风险标识