[MM-58086] platform/busy_test.go: increase test busy duration time (#27082)

server/channels/app/platform/busy_test.go

@@ -24,11 +24,11 @@ func TestBusySet(t *testing.T) {
 
 	require.False(t, busy.IsBusy())
 
-	busy.Set(time.Millisecond * 500)
+	busy.Set(5 * time.Second)
 	require.True(t, busy.IsBusy())
 	require.True(t, compareBusyState(t, busy, cluster.Busy))
 
-	// should automatically expire after 500ms.
+	// should automatically expire after 5s.
 	require.Eventually(t, isNotBusy, time.Second*15, time.Millisecond*100)
 	// allow a moment for cluster to sync.
 	require.Eventually(t, func() bool { return compareBusyState(t, busy, cluster.Busy) }, time.Second*15, time.Millisecond*20)