pd-ctl: fix the output trim

[JmPotato]

What problem does this PR solve?

Issue Number: ref #4399.

What is changed and how does it work?

Fix the output trim of the pd-ctl command.

Check List

Tests

• Unit test
• Integration test
• Manual test (add detailed scripts or steps below)

Before:

After:

Release note

None.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 77.34%. Comparing base (6f8286b) to head (ca7a021).

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #8309      +/-   ##
==========================================
- Coverage   77.40%   77.34%   -0.06%     
==========================================
  Files         470      470              
  Lines       61359    61360       +1     
==========================================
- Hits        47494    47460      -34     
- Misses      10308    10347      +39     
+ Partials     3557     3553       -4     

Flag	Coverage Δ
unittests	77.34% <100.00%> (-0.06%)	⬇️

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[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: HuSharp, okJiang, rleungx

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2024-06-19 09:39:39.708698216 +0000 UTC m=+194106.194187044: ☑️ agreed by rleungx.
• 2024-06-19 09:59:51.623313601 +0000 UTC m=+195318.108802431: ☑️ agreed by HuSharp.