ConfigItem: Fix infinite recursion caused by ignore_on_error when committing an item

When committing an item with `ignore_on_error` flag set fails, the `Commit()` method only returns `nullptr`
and the current item is not being dropped from `m_Items`. `CommittNewItems()` also doesn't check the return
value of `Commit()` but just continues and tries to commit all items from `m_Items` in recursive call. Since
this corrupt item is never removed from `m_Items`, it ends up in an endless recursion till it finally crashes.

lib/config/configitem.cpp

@@ -470,7 +470,14 @@ bool ConfigItem::CommitNewItems(const ActivationContext::Ptr& context, WorkQueue
 				if (item->m_Type != type)
 					return;
 
-				ip.first->Commit(ip.second);
+				if (!item->Commit(ip.second)) {
+					if (item->IsIgnoreOnError()) {
+						item->Unregister();
+					}
+
+					return;
+				}
+
 				committed_items++;
 			});