fix: incorrectly worded error message in argocd-update is corrected

[RohanMishra315]

fixes : #3163

1. Error Message Adjustment:

Changed the phrasing from "was not initiated by %q and not by %q" to "was initiated by %q and not by %q".
This directly states who initiated the operation (status.Operation.InitiatedBy.Username) and clarifies it wasn't initiated by the expected user (applicationOperationInitiator).

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[krancour]

@RohanMishra315, it looks like there's a test case that is sensitive to the wording in that error and needs to be adjusted accordingly:

kargo/internal/directives/argocd_updater_test.go

Line 981 in 011f87a

require.ErrorContains(t, err, "current operation was not initiated by")

You can run the tests locally to ensure this passes:

https://docs.kargo.io/contributor-guide/hacking-on-kargo#running-tests

After that's corrected, LGTM.

Thank you for this!

[krancour]

Thank you @RohanMishra315!

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 51.40%. Comparing base (011f87a) to head (f55810a).
Report is 3 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #3192   +/-   ##
=======================================
  Coverage   51.40%   51.40%           
=======================================
  Files         288      288           
  Lines       26108    26108           
=======================================
  Hits        13421    13421           
  Misses      11961    11961           
  Partials      726      726           

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