Introduced `ReceiverSuggestionFilterHandler` to refine the
filtering of recent receiver suggestions based on name and
email. Added `SuggestionLimit` constant to replace hardcoded
limits and ensure consistency. Updated UI to use the new
`FilteredRecentSuggestions` property, which leverages the
`BuildFilteredRecentSuggestions` method for grouping,
ordering, and limiting suggestions. Adjusted
`OnDocumentSelectedAsync` to use the new constant. Added
necessary `@using` directive for the filter handler.
TekH
60241c9c6d