Promote security knowledge from community to Microsoft layer

Pure git-mv relocation of the SECURITY domain from the community layer to the Microsoft layer. No content changes.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

microsoft/knowledge/security/guard-bulk-operations-with-istemporary.bad.al

@@ -0,0 +1,10 @@
+codeunit 50100 "Order Buffer Helper"
+{
+    procedure ResetStagingBuffer(var OrderBuffer: Record "Sales Header")
+    begin
+        // No IsTemporary check. A caller that accidentally passes the real
+        // Sales Header table wipes every sales header in the company with
+        // no prior warning.
+        OrderBuffer.DeleteAll();
+    end;
+}