sentinel 1.8.6 导致openfeign接口出现Caused by: java.lang.IllegalStateException: No fallback instance of type

## Issue Description

Type: *bug report* or *feature request*

### Describe what happened (or what feature you want)
当设置feign.sentinel.enabled: true时出现如下错误

Caused by: java.lang.IllegalStateException: No fallback instance of type class com.fosafer.voiceprint.platform.module.infra.api.logger.ApiErrorLogApiFallback found for feign client infra-server
at com.alibaba.cloud.sentinel.feign.SentinelFeign$Builder$1.getFromContext(SentinelFeign.java:125)
at com.alibaba.cloud.sentinel.feign.SentinelFeign$Builder$1.create(SentinelFeign.java:104)
at org.springframework.cloud.openfeign.FeignCachingInvocationHandlerFactory.create(FeignCachingInvocationHandlerFactory.java:50)
at feign.ReflectiveFeign.newInstance(ReflectiveFeign.java:64)
at feign.Feign$Builder.target(Feign.java:268)
at org.springframework.cloud.openfeign.DefaultTargeter.target(DefaultTargeter.java:30)
at org.springframework.cloud.openfeign.FeignClientFactoryBean.loadBalance(FeignClientFactoryBean.java:379)
at org.springframework.cloud.openfeign.FeignClientFactoryBean.getTarget(FeignClientFactoryBean.java:427)
at org.springframework.cloud.openfeign.FeignClientFactoryBean.getObject(FeignClientFactoryBean.java:402)
at org.springframework.cloud.openfeign.FeignClientsRegistrar.lambda$registerFeignClient$0(FeignClientsRegistrar.java:235)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.obtainFromSupplier(AbstractAutowireCapableBeanFactory.java:1249)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1191)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:582)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:542)
... 91 common frames omitted

### Describe what you expected to happen

### How to reproduce it (as minimally and precisely as possible)
代码如下

@FeignClient(name = ApiConstants.NAME,fallback = ApiErrorLogApiFallback.class)
public interface ApiErrorLogApi {

@PostMapping(ApiConstants.PREFIX + "/infra/api-error-log/create")
CommonResult createApiErrorLog(@Valid @RequestBody ApiErrorLogCreateReqDTO createDTO);

}

@Component
public class ApiErrorLogApiFallback implements ApiErrorLogApi {
@Override
public CommonResult createApiErrorLog(ApiErrorLogCreateReqDTO createDTO) {
return CommonResult.timeout();
}
}

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### Tell us your environment
2.6.13
2021.0.1
2021.0.1.0
### Anything else we need to know?

Start by reproducing the failure with Spring Boot 2.6.13, Spring Cloud 2021.0.1, Spring Cloud Alibaba 2021.0.1.0, and feign.sentinel.enabled: true. Read the fallback lookup path in com.alibaba.cloud.sentinel.feign.SentinelFeign, especially the getFromContext and create entry points shown in the trace. Done means the provided ApiErrorLogApi fallback is found without the reported exception.

Written by the indexing model from the issue text.