fix: technical debts left by the Sites, Authors and SEO slices, plus backend support for the new Sites and Authors pagination

test/media_pagination_http_test.go

@@ -347,3 +347,14 @@ func TestListMediaUseCasePaging(t *testing.T) {
 		}
 	})
 }
+
+func TestMediaPaginationHugePage(t *testing.T) {
+	env := newMediaEnv(t)
+	seedBulkImages(env, 3)
+
+	got, _ := env.list(t, "?page=138000000000000001&size=100")
+
+	if got.Total != 3 || len(got.Items) != 0 || got.Page != 138000000000000001 || got.Size != 100 {
+		t.Errorf("unexpected envelope total=%d items=%d page=%d size=%d", got.Total, len(got.Items), got.Page, got.Size)
+	}
+}