Big Sur and Outlook search functionality

Microsoft has discovered some search functionality issues were limited by early releases of Mac OS Big Sur.

https://support.microsoft.com/en-us/office/search-in-outlook-for-mac-returns-limited-or-no-results-for-macos-big-sur-b5dec081-3aa0-4f10-bba7-7a18f3f85252

Documents what those issues were and how to fix them.