[ISSUE #6285] Polish the DLedgerControllerStateMachine log output to help troubleshoot

[RongtongJin]

Make sure set the target branch to develop

What is the purpose of the change

fix #6285

Brief changelog

XX

Verifying this change

XXXX

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[codecov-commenter]

Codecov Report

Attention: Patch coverage is 80.00000% with 1 line in your changes missing coverage. Please review.

Project coverage is 43.15%. Comparing base (1986c6b) to head (cd04678).
Report is 723 commits behind head on develop.

Files with missing lines	Patch %	Lines
...controller/impl/DLedgerControllerStateMachine.java	80.00%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@              Coverage Diff              @@
##             develop    #6286      +/-   ##
=============================================
+ Coverage      43.14%   43.15%   +0.01%     
- Complexity      8851     8858       +7     
=============================================
  Files           1095     1095              
  Lines          77269    77283      +14     
  Branches       10078    10083       +5     
=============================================
+ Hits           33334    33353      +19     
+ Misses         39768    39761       -7     
- Partials        4167     4169       +2     

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[TheR1sing3un]

LGTM~