[MM-45868] Add teamId to Threads table (#20915)

* Add teamId to Threads table

* Get rid of multiple teamId reads

* Fix failed test

* Add teamId to standard queries

* Fix linter

* Get teamId from db

db/migrations/postgres/000094_threads_teamid.down.sql

@@ -0,0 +1 @@
+ALTER TABLE threads DROP COLUMN IF EXISTS teamid;

db/migrations/postgres/000094_threads_teamid.up.sql

@@ -0,0 +1,2 @@
+ALTER TABLE threads ADD COLUMN IF NOT EXISTS teamid VARCHAR(26);
+UPDATE threads SET teamid = channels.teamid FROM channels WHERE threads.teamid IS NULL AND channels.id = threads.channelid;