ccl/multiregion: skip TestMrSystemDatabase

This test is flaky. See cockroachdb#98039.

Epic: None

Release note: None

pkg/ccl/multiregionccl/multiregion_system_table_test.go

@@ -26,6 +26,7 @@ import (
 	"github.com/cockroachdb/cockroach/pkg/sql/sqlliveness/slstorage"
 	"github.com/cockroachdb/cockroach/pkg/testutils"
 	"github.com/cockroachdb/cockroach/pkg/testutils/serverutils"
+	"github.com/cockroachdb/cockroach/pkg/testutils/skip"
 	"github.com/cockroachdb/cockroach/pkg/testutils/sqlutils"
 	"github.com/cockroachdb/cockroach/pkg/util/envutil"
 	"github.com/cockroachdb/cockroach/pkg/util/leaktest"
@@ -40,6 +41,8 @@ func TestMrSystemDatabase(t *testing.T) {
 	defer log.Scope(t).Close(t)
 	defer envutil.TestSetEnv(t, "COCKROACH_MR_SYSTEM_DATABASE", "1")()
 
+	skip.WithIssue(t, 98039, "flaky test")
+
 	ctx := context.Background()
 
 	// Enable settings required for configuring a tenant's system database as multi-region.