IGNITE-17463 Fix assertion error in test log messages (#10180)

* IGNITE-17463 Fix assertion error in test log messages

* Fix null

* Add comment
diff --git a/modules/core/src/test/java/org/apache/ignite/testframework/ListeningTestLogger.java b/modules/core/src/test/java/org/apache/ignite/testframework/ListeningTestLogger.java
index 4e0638f..0c2b69f 100644
--- a/modules/core/src/test/java/org/apache/ignite/testframework/ListeningTestLogger.java
+++ b/modules/core/src/test/java/org/apache/ignite/testframework/ListeningTestLogger.java
@@ -193,6 +193,9 @@
 
     /** {@inheritDoc} */
     @Override public boolean isInfoEnabled() {
+        // This is required to proxy `isInfoEnabled` requests to delegated classes.
+        boolean ignore = echo != null && echo.isInfoEnabled();
+
         return true;
     }