Not handling error messages properly

[clcollins]

SREPD has an errorMsg tea.Msg type for errors, and it's used in a number of places to return the errors, but for some reason the Update method does not handle these messages properly.

Examples include errors returned from the openOCMContainer() function:

debug 2023/12/11 09:44:51 [fork/exec /usr/bin/gnome-terminal: no such file or directory]

...as well as the acknowledge workflow, when ack'ing an already-resolved incident:

debug 2023/12/11 11:35:10 [setStatus HTTP response failed with status code 400, message: Invalid Input Provided (code: 2001): Incident Already Resolved]
debug 2023/12/11 11:35:10 HTTP response failed with status code 400, message: Invalid Input Provided (code: 2001): Incident Already Resolved

These messages are logged in the debug log, but not handled in the TUI.