[MM-24337]: Fix the team and channel filtering UT to include empty team or channel (#15912)

* Fix the team and channel filtering UT to include empty team or channel

* Fix tests that were failing before this change

Once we've activated the team/channels filter tests for PostgreSQL
and MySQL there are some tests failing so this changes fixes them

* Disable team filtering tests for DBs by now

We have a discrepancy between DB search and ES/Bleve on how to filter
teams when you have users in both teams:

  - DB when filtering by one team and searching by another returns users that are in both teams
  - Bleve and ES returns empty

Co-authored-by: Mario de Frutos <mario@defrutos.org>
Co-authored-by: Mattermod <mattermod@users.noreply.github.com>

store/searchtest/user_layer.go

@@ -20,7 +20,7 @@ var searchUserStoreTests = []searchTest{
 	{
 		Name: "Should honor channel restrictions when autocompleting users",
 		Fn:   testHonorChannelRestrictionsAutocompletingUsers,
-		Tags: []string{ENGINE_ELASTICSEARCH, ENGINE_BLEVE},
+		Tags: []string{ENGINE_ALL},
 	},
 	{
 		Name: "Should honor team restrictions when autocompleting users",
@@ -238,7 +238,7 @@ func testHonorChannelRestrictionsAutocompletingUsers(t *testing.T, th *SearchTes
 	})
 	t.Run("Autocomplete users with all channels restricted", func(t *testing.T) {
 		options := createDefaultOptions(true, false, false)
-		options.ViewRestrictions = &model.ViewUsersRestrictions{Channels: []string{}}
+		options.ViewRestrictions = &model.ViewUsersRestrictions{Teams: []string{}, Channels: []string{}}
 		users, apperr := th.Store.User().AutocompleteUsersInChannel(th.Team.Id, th.ChannelBasic.Id, "", options)
 		require.Nil(t, apperr)
 		th.assertUsersMatchInAnyOrder(t, []*model.User{}, users.InChannel)
@@ -246,7 +246,7 @@ func testHonorChannelRestrictionsAutocompletingUsers(t *testing.T, th *SearchTes
 	})
 	t.Run("Autocomplete users with all channels restricted but with empty team", func(t *testing.T) {
 		options := createDefaultOptions(true, false, false)
-		options.ViewRestrictions = &model.ViewUsersRestrictions{Channels: []string{}}
+		options.ViewRestrictions = &model.ViewUsersRestrictions{Teams: []string{}, Channels: []string{}}
 		users, apperr := th.Store.User().AutocompleteUsersInChannel("", th.ChannelBasic.Id, "", options)
 		require.Nil(t, apperr)
 		th.assertUsersMatchInAnyOrder(t, []*model.User{}, users.InChannel)
@@ -273,7 +273,7 @@ func testHonorTeamRestrictionsAutocompletingUsers(t *testing.T, th *SearchTestHe
 	})
 	t.Run("Should return empty because we're filtering all the teams", func(t *testing.T) {
 		options := createDefaultOptions(true, false, false)
-		options.ViewRestrictions = &model.ViewUsersRestrictions{Teams: []string{}}
+		options.ViewRestrictions = &model.ViewUsersRestrictions{Teams: []string{}, Channels: []string{}}
 		users, apperr := th.Store.User().AutocompleteUsersInChannel(th.Team.Id, th.ChannelBasic.Id, "", options)
 		require.Nil(t, apperr)
 		th.assertUsersMatchInAnyOrder(t, []*model.User{}, users.InChannel)