fix(Agent): Propagate non-job request exceptions to foreground

[balamurali27]

For requests that aren't jobs, it's easier to debug the cause if they
are propagated to frontend rather than logged.
TODO:

• Throw actual error from agent into frontend rather than raise_for_status

Eg: Login as admin
ref: https://support.frappe.io/helpdesk/tickets/27474 was failing due to journeys app. Had to ssh and run the command to see what the issue was.
Another case: https://support.frappe.io/helpdesk/tickets/27477

[codecov]

Codecov Report

Attention: Patch coverage is 66.66667% with 1 line in your changes missing coverage. Please review.

Project coverage is 38.58%. Comparing base (ed58508) to head (62beb44).
Report is 2 commits behind head on master.

Files with missing lines	Patch %	Lines
press/agent.py	66.66%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #2382   +/-   ##
=======================================
  Coverage   38.58%   38.58%           
=======================================
  Files         376      376           
  Lines       29080    29080           
=======================================
  Hits        11221    11221           
  Misses      17859    17859           

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