Exception getting generics in completabilefuture when using api doc

there are some warnings when running application.

It seems like DubboApiDocsAnnotationScanner cant handle the parameter's class which extends generic parent.

For example com.alibaba.fastjson2.JSONObject

```java
public interface ITestDubboService {
public String call(name, JSONObject params);
}
```
```java
import com.alibaba.fastjson2.JSONObject;
import org.apache.dubbo.apidocs.annotations.ApiDoc;
import org.apache.dubbo.apidocs.annotations.ApiModule;
import org.apache.dubbo.apidocs.annotations.RequestParam;
import org.apache.dubbo.config.annotation.DubboService;
import org.apache.dubbo.rpc.cluster.loadbalance.RoundRobinLoadBalance;

@DubboService(
timeout = 3000,
loadbalance = RoundRobinLoadBalance.NAME)
@ApiModule(value = "dubbo测试接口", apiInterface = ITestDubboService.class)
public class TestDubboServiceImpl implements ITestDubboService {

@ApiDoc(
value = "call",
description = "方法调用测试",
responseClassDescription = "json字串")
@Override
public String call(
@RequestParam(value = "name", description = "调用者") String name,
@RequestParam(value = "params", description = "参数列表") JSONObject params) {
System.out.println(name+" calls "+params);
}
}
```

```java
DubboApiDocsAnnotationScanner#processApiDocAnnotation(...) {
...
String key = String.format("%s.%s%s", moduleAnn.apiInterface().getCanonicalName(), method.getName(), desc);
DubboApiDocsCache.addApiParamsAndResp(key, apiParamsAndResp);

Class[] argsClass = method.getParameterTypes();
Annotation[][] argsAnns = method.getParameterAnnotations();
Parameter[] parameters = method.getParameters();
Type[] parametersTypes = method.getGenericParameterTypes();
List paramList = new ArrayList<>(argsClass.length);
...
for (int i = 0; i < argsClass.length; i++) {
Class argClass = argsClass[i];
Type parameterType = parametersTypes[i];
methodParamInfoSb.append(METHOD_PARAM_INDEX_BOUNDARY_LEFT).append(i)
.append(METHOD_PARAM_INDEX_BOUNDARY_RIGHT).append(argClass.getCanonicalName());
if (i + 1 < argsClass.length) {
methodParamInfoSb.append(METHOD_PARAMETER_SEPARATOR);
}
...
}

```

```
java.lang.ClassNotFoundException: V
at jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:641) ~[?:?]
at jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:188) ~[?:?]
at java.lang.ClassLoader.loadClass(ClassLoader.java:520) ~[?:?]
at java.lang.Class.forName0(Native Method) ~[?:?]
at java.lang.Class.forName(Class.java:375) ~[?:?]
at org.apache.dubbo.apidocs.utils.ClassTypeUtil.makeClass(ClassTypeUtil.java:407) ~[dubbo-api-docs-core-2.7.8.3.jar:2.7.8.3]
at org.apache.dubbo.apidocs.utils.ClassTypeUtil.initClassTypeWithDefaultValueNoProceeField(ClassTypeUtil.java:294) ~[dubbo-api-docs-core-2.7.8.3.jar:2.7.8.3]
at org.apache.dubbo.apidocs.utils.ClassTypeUtil.initClassTypeWithDefaultValue(ClassTypeUtil.java:145) ~[dubbo-api-docs-core-2.7.8.3.jar:2.7.8.3]
at org.apache.dubbo.apidocs.utils.ClassTypeUtil.initClassTypeWithDefaultValue(ClassTypeUtil.java:122) ~[dubbo-api-docs-core-2.7.8.3.jar:2.7.8.3]
at org.apache.dubbo.apidocs.core.DubboApiDocsAnnotationScanner.processField(DubboApiDocsAnnotationScanner.java:359) ~[dubbo-api-docs-core-2.7.8.3.jar:2.7.8.3]
at org.apache.dubbo.apidocs.core.DubboApiDocsAnnotationScanner.processApiDocAnnotation(DubboApiDocsAnnotationScanner.java:282) ~[dubbo-api-docs-core-2.7.8.3.jar:2.7.8.3]
at org.apache.dubbo.apidocs.core.DubboApiDocsAnnotationScanner.lambda$onApplicationEvent$2(DubboApiDocsAnnotationScanner.java:166) ~[dubbo-api-docs-core-2.7.8.3.jar:2.7.8.3]
at java.util.LinkedHashMap.forEach(LinkedHashMap.java:721) ~[?:?]
at org.apache.dubbo.apidocs.core.DubboApiDocsAnnotationScanner.onApplicationEvent(DubboApiDocsAnnotationScanner.java:113) ~[dubbo-api-docs-core-2.7.8.3.jar:2.7.8.3]
at org.apache.dubbo.apidocs.core.DubboApiDocsAnnotationScanner.onApplicationEvent(DubboApiDocsAnnotationScanner.java:84) ~[dubbo-api-docs-core-2.7.8.3.jar:2.7.8.3]
at org.springframework.context.event.SimpleApplicationEventMulticaster.doInvokeListener(SimpleApplicationEventMulticaster.java:176) ~[spring-context-5.3.21.jar:5.3.21]
at org.springframework.context.event.SimpleApplicationEventMulticaster.invokeListener(SimpleApplicationEventMulticaster.java:169) ~[spring-context-5.3.21.jar:5.3.21]
at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:143) ~[spring-context-5.3.21.jar:5.3.21]
at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:421) ~[spring-context-5.3.21.jar:5.3.21]
at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:378) ~[spring-context-5.3.21.jar:5.3.21]
at org.springframework.boot.context.event.EventPublishingRunListener.ready(EventPublishingRunListener.java:114) ~[spring-boot-2.7.1.jar:2.7.1]
at org.springframework.boot.SpringApplicationRunListeners.lambda$ready$6(SpringApplicationRunListeners.java:82) ~[spring-boot-2.7.1.jar:2.7.1]
at java.util.ArrayList.forEach(ArrayList.java:1511) [?:?]
at org.springframework.boot.SpringApplicationRunListeners.doWithListeners(SpringApplicationRunListeners.java:120) [spring-boot-2.7.1.jar:2.7.1]
at org.springframework.boot.SpringApplicationRunListeners.doWithListeners(SpringApplicationRunListeners.java:114) [spring-boot-2.7.1.jar:2.7.1]
at org.springframework.boot.SpringApplicationRunListeners.ready(SpringApplicationRunListeners.java:82) [spring-boot-2.7.1.jar:2.7.1]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:323) [spring-boot-2.7.1.jar:2.7.1]
```