@deleteRecord wiped the campaign from the Relay store but left the
cached AccessReviewCampaignsTabQuery connection holding an edge
pointing to the now-missing record. Re-opening the access-reviews
tab made Relay surface a missing-data error and the org error
boundary rendered "Unexpected error :(".
Switch to @deleteEdge with the campaigns connection id so the edge
is removed alongside the deletion, matching the pattern already used
by audit and statement-of-applicability detail pages.
Signed-off-by: Aurélien Sibiril <81782+aureliensibiril@users.noreply.github.com>