test: add unit test to excercise bug when idp sync hits deleted orgs (#17405)

Deleted organizations are still attempting to sync members. This causes
an error on inserting the member, and would likely cause issues later in
the sync process even if that member is inserted. Deleted orgs should be
skipped.

coderd/database/dbfake/builder.go

@@ -17,6 +17,7 @@ type OrganizationBuilder struct {
 	t                 *testing.T
 	db                database.Store
 	seed              database.Organization
+	delete            bool
 	allUsersAllowance int32
 	members           []uuid.UUID
 	groups            map[database.Group][]uuid.UUID
@@ -45,6 +46,12 @@ func (b OrganizationBuilder) EveryoneAllowance(allowance int) OrganizationBuilde
 	return b
 }
 
+func (b OrganizationBuilder) Deleted(deleted bool) OrganizationBuilder {
+	//nolint: revive // returns modified struct
+	b.delete = deleted
+	return b
+}
+
 func (b OrganizationBuilder) Seed(seed database.Organization) OrganizationBuilder {
 	//nolint: revive // returns modified struct
 	b.seed = seed
@@ -119,6 +126,17 @@ func (b OrganizationBuilder) Do() OrganizationResponse {
 		}
 	}
 
+	if b.delete {
+		now := dbtime.Now()
+		err = b.db.UpdateOrganizationDeletedByID(ctx, database.UpdateOrganizationDeletedByIDParams{
+			UpdatedAt: now,
+			ID:        org.ID,
+		})
+		require.NoError(b.t, err)
+		org.Deleted = true
+		org.UpdatedAt = now
+	}
+
 	return OrganizationResponse{
 		Org:           org,
 		AllUsersGroup: everyone,