fix: 修复 sa-token-dubbo 模块，部分场景下无法正确处理上下文的问题

sa-token-plugin/sa-token-dubbo/src/main/java/cn/dev33/satoken/context/dubbo/filter/SaTokenDubboContextFilter.java

@@ -16,6 +16,7 @@
 package cn.dev33.satoken.context.dubbo.filter;
 
 import cn.dev33.satoken.SaManager;
+import cn.dev33.satoken.context.SaHolder;
 import cn.dev33.satoken.context.dubbo.util.SaTokenContextDubboUtil;
 import cn.dev33.satoken.util.SaTokenConsts;
 import org.apache.dubbo.common.constants.CommonConstants;
@@ -33,11 +34,15 @@ public class SaTokenDubboContextFilter implements Filter {
 
 	@Override
 	public Result invoke(Invoker<?> invoker, Invocation invocation) {
-		try {
-			SaTokenContextDubboUtil.setContext(RpcContext.getContext());
+		if(SaHolder.getContext().isValid()) {
 			return invoker.invoke(invocation);
-		} finally {
-			SaManager.getSaTokenContext().clearContext();
+		} else {
+			try {
+				SaTokenContextDubboUtil.setContext(RpcContext.getContext());
+				return invoker.invoke(invocation);
+			} finally {
+				SaManager.getSaTokenContext().clearContext();
+			}
 		}
 	}
 

sa-token-plugin/sa-token-dubbo3/src/main/java/cn/dev33/satoken/context/dubbo3/filter/SaTokenDubbo3ContextFilter.java

@@ -16,6 +16,7 @@
 package cn.dev33.satoken.context.dubbo3.filter;
 
 import cn.dev33.satoken.SaManager;
+import cn.dev33.satoken.context.SaHolder;
 import cn.dev33.satoken.context.dubbo3.util.SaTokenContextDubbo3Util;
 import cn.dev33.satoken.util.SaTokenConsts;
 import org.apache.dubbo.common.constants.CommonConstants;
@@ -33,11 +34,15 @@ public class SaTokenDubbo3ContextFilter implements Filter {
 
 	@Override
 	public Result invoke(Invoker<?> invoker, Invocation invocation) {
-		try {
-			SaTokenContextDubbo3Util.setContext(RpcContext.getServiceContext());
+		if(SaHolder.getContext().isValid()) {
 			return invoker.invoke(invocation);
-		} finally {
-			SaManager.getSaTokenContext().clearContext();
+		} else {
+			try {
+				SaTokenContextDubbo3Util.setContext(RpcContext.getServiceContext());
+				return invoker.invoke(invocation);
+			} finally {
+				SaManager.getSaTokenContext().clearContext();
+			}
 		}
 	}