SysrepoAccess: Fix overwriting leafs without commit

Bug: https://tree.taiga.io/project/jktjkt-netconf-cli/issue/229
Change-Id: Ia63b2ba5b91020108d8d1c64aa5db7cafa969f69
diff --git a/src/sysrepo_access.cpp b/src/sysrepo_access.cpp
index 30a3e25..bbdf6d1 100644
--- a/src/sysrepo_access.cpp
+++ b/src/sysrepo_access.cpp
@@ -140,7 +140,7 @@
 {
     try {
         m_session->session_switch_ds(targetToDs_set(m_target));
-        m_session->set_item(path.c_str(), boost::apply_visitor(valFromValue(), value));
+        m_session->set_item(path.c_str(), boost::apply_visitor(valFromValue(), value), SR_EDIT_ISOLATE);
     } catch (sysrepo::sysrepo_exception& ex) {
         reportErrors();
     }