test(transport): remove DNS dependency from guard success case

Author: loong10k

src/test/java/io/github/easy4j/hermes/util/EndpointGuardTest.java

@@ -155,7 +155,7 @@ void shouldCoverRequireSafeHostEdgeBranches() {
 
     @Test
     void shouldReturnSameUrlOnSuccess() {
-        assertEquals("https://api.example.com/v1", EndpointGuard.require("https://api.example.com/v1"));
+        assertEquals("https://1.1.1.1/v1", EndpointGuard.require("https://1.1.1.1/v1"));
     }
 
     // ----- 集成点：所有出站客户端都套同一守卫 -----