Once the source-name worker sets name_synced_at, nothing cleared it,
so a source that hit a terminal failure (Brex 403, wrong Sentry org
slug) kept its generic name forever — even after the user reconnected
with the right scope or picked the correct org, contradicting the
Brex guidance to reconnect.
Clear name_synced_at whenever the connection changes: on UpdateSource
when a connector is (re)set, inside ConfigureAccessReviewSource when
the org is (re)selected, and on the OAuth reconnect path via the new
ResetSourceNameSyncForConnector service method. The worker then
re-claims the row and re-resolves the display name.
Signed-off-by: Aurélien Sibiril <81782+aureliensibiril@users.noreply.github.com>
f711e9d816