CLI-1692: Added documentation link of known issue to authentication error

[kalindi-adhiya]

Motivation

Fixes #NNN

Proposed changes

Alternatives considered

Testing steps

1. Follow the contribution guide to set up your development environment or download a pre-built acli.phar for this PR.
2. If running from source, clear the kernel cache to pick up new and changed commands: ./bin/acli ckc
3. Check for regressions: (add specific steps for this pr)
4. Check new functionality: (add specific steps for this pr)

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 92.27%. Comparing base (866ef61) to head (ec60f1f).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff            @@
##               main    #1956   +/-   ##
=========================================
  Coverage     92.27%   92.27%           
  Complexity     1916     1916           
=========================================
  Files           122      122           
  Lines          6993     6994    +1     
=========================================
+ Hits           6453     6454    +1     
  Misses          540      540           

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[github-actions]

Try the dev build for this PR: https://acquia-cli.s3.amazonaws.com/build/pr/1956/acli.phar

curl -OL https://acquia-cli.s3.amazonaws.com/build/pr/1956/acli.phar
chmod +x acli.phar

[Copilot]

Pull request overview

This PR adds a documentation link to the authentication error message that appears when users encounter federated authentication issues. This helps users quickly access known issue documentation for troubleshooting.

Changes:

• Added a help message with a documentation URL pointing to the known issues page for federated authentication
• Updated the test to verify the new help message is included in the error output

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
src/EventListener/ExceptionListener.php	Adds documentation link to the federated authentication error help messages
tests/phpunit/src/Misc/ExceptionListenerTest.php	Updates test expectation to include the new documentation link message

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