fallback Method throw exception but seata does not rollback (#3786)

Co-authored-by: xjs1919 <xjs@163.com>

spring-cloud-alibaba-starters/spring-cloud-starter-alibaba-sentinel/src/main/java/com/alibaba/cloud/sentinel/feign/SentinelInvocationHandler.java

@@ -124,7 +124,7 @@ public class SentinelInvocationHandler implements InvocationHandler {
 							throw new AssertionError(e);
 						}
 						catch (InvocationTargetException e) {
-							throw new AssertionError(e.getCause());
+							throw e.getCause();
 						}
 					}
 					else {