[FIX] Custom status fixes (#14853)

* Fixes for status message text presence issues
Added statusText to several api endpoints
Changed statusMessage to statusText since that is what it is called everywhere

* Fixed slash command for changing status

* Fixed the "name is required" issue

* Make sure the status is set blank if selecting a default status... we don't want an "online" status when someone is actually offline!

* Fixes display of custom status on the room header

* Changed the header of DM rooms to query the server for the user status text when it is not found on the internal collection

* Changed Custom Status methods to check if the user is logged in

* Improved code readability

* Fix getting status list before logging in