HHH-15814 add methods for current time selection to CockroachLegacy Dialect

hibernate-community-dialects/src/main/java/org/hibernate/community/dialect/CockroachLegacyDialect.java

@@ -423,6 +423,21 @@ public class CockroachLegacyDialect extends Dialect {
 		return " cascade";
 	}
 
+	@Override
+	public boolean supportsCurrentTimestampSelection() {
+		return true;
+	}
+
+	@Override
+	public boolean isCurrentTimestampSelectStringCallable() {
+		return false;
+	}
+
+	@Override
+	public String getCurrentTimestampSelectString() {
+		return "select now()";
+	}
+
 	@Override
 	public boolean supportsDistinctFromPredicate() {
 		return true;