Add exceptions next to each other

Make sure new exceptions get added right after the last exception, instead of adding them at the end of the `` element. Example:

https://github.com/dotnet/dotnet-api-docs/pull/7889/files#r836896431 The exception was added after the `` elements.

Start by inspecting the linked pull request diff and the api-docs-sync handling of exception elements within the element. Confirm where ordering is determined. Done means newly added exceptions appear immediately after the last exception, before any elements, rather than at the end of .

Written by the indexing model from the issue text.