Include extra metadata when clicking an interactive button (#12697)

* Include user_name, team_domain and channel_name when clicking an interactive button

* Fixed api4's TestPostActionCookies test

* Moved team database request to improve concurrency.
Renamed TeamDomain to TeamName.

* Further optimizations to database requests

* Removed useless goroutine when fetching channel

api4/integration_action_test.go

@@ -27,8 +27,11 @@ func (th *testHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 	assert.NotEmpty(th.t, string(bb))
 	poir := model.PostActionIntegrationRequestFromJson(bytes.NewReader(bb))
 	assert.NotEmpty(th.t, poir.UserId)
+	assert.NotEmpty(th.t, poir.UserName)
 	assert.NotEmpty(th.t, poir.ChannelId)
-	assert.Empty(th.t, poir.TeamId)
+	assert.NotEmpty(th.t, poir.ChannelName)
+	assert.NotEmpty(th.t, poir.TeamId)
+	assert.NotEmpty(th.t, poir.TeamName)
 	assert.NotEmpty(th.t, poir.PostId)
 	assert.NotEmpty(th.t, poir.TriggerId)
 	assert.Equal(th.t, "button", poir.Type)