[FEATURE] better error messages for discord action

**Is your feature request related to a problem? Please describe.**
related to #6944
Whether you are ratelimited or your message is over some characters it gives a very non descriptive
"Error communicating with discord" message
**Describe the solution you'd like**
Actual error messages which tell me what the error is.

**Do you have a workaround?**
I am gonna try to rate limit manually according to the discord docs.
And I am gonna cut my messages myself.

**Comparable features in other tools?**
I would hope so

**Additional context**
see an example workflow here: https://pipedream.com/@fotodino/on-error-in-pipedream-p_zACAeOx/settings