fix: dynamic class only class to modify void method problem

Author: YongwuHe

arex-instrumentation/dynamic/arex-dynamic/src/main/java/io/arex/inst/dynamic/DynamicClassInstrumentation.java

@@ -106,7 +106,7 @@ private void removeIgnoredMethods(DynamicType.Builder<?> builder) {
     public List<MethodInstrumentation> methodAdvices() {
         ElementMatcher.Junction<MethodDescription> matcher = null;
         if (onlyClass != null) {
-            matcher = isMethod().and(isPublic()).and(not(takesNoArguments()))
+            matcher = isMethod().and(isPublic()).and(not(takesNoArguments())).and(not(returns(TypeDescription.ForLoadedType.of(void.class))))
                 .and(not(isAnnotatedWith(namedOneOf(DynamicConstants.SPRING_CACHE, DynamicConstants.AREX_MOCK))));
             if (isNotAbstractClass(onlyClass.getClazzName())) {
                 matcher = matcher.and(not(isOverriddenFrom(namedOneOf(Config.get().getDynamicAbstractClassList()))));