IGNITE-22173 Added logging for CDC mode switching (#11340)

Co-authored-by: Aleksandr Nikolaev <nao-it@yandex.ru>
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/cdc/CdcMain.java b/modules/core/src/main/java/org/apache/ignite/internal/cdc/CdcMain.java
index eb52d2e..c76f41f 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/cdc/CdcMain.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/cdc/CdcMain.java
@@ -641,6 +641,9 @@
                     case CDC_MANAGER_STOP_RECORD:
                         state.saveCdcMode((cdcModeState = CdcMode.CDC_UTILITY_ACTIVE));
 
+                        if (log.isInfoEnabled())
+                            log.info("CDC mode switched [mode=" + cdcModeState + ']');
+
                         return true;
 
                     default: