[WIP] Fix logrus-entry-contents when it is in hooks.

[yanggangtony]

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Please add a summary of your change

In the issue #6187 , we found some strange behaviour of the logs output.
I add some test code for the logrus entry hook.
I found that when the first new the NewTempFileLogger and init the logrus.Fields , it works as expect.

But when i override the value of logrus.Fields , it can not be works.
Like the pics i test it.

Does your change fix a particular issue?

Fixes #6187

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 61.65%. Comparing base (174c10f) to head (b1da01f).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #7037      +/-   ##
==========================================
+ Coverage   61.64%   61.65%   +0.01%     
==========================================
  Files         262      262              
  Lines       28480    28480              
==========================================
+ Hits        17556    17559       +3     
+ Misses       9691     9689       -2     
+ Partials     1233     1232       -1     

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[yanggangtony]

[yanggangtony]

ReTest the logrus's hooks and entry output.
I can roughly get the conclusion of the output logs when used .WithError( or logger.WithFields(. It maybe a logrus's design , when the entry is init , can not be changed anymore in hooks logic.

How do you think about that ? @Lyndon-Li @sseago
If i changed the code , delete the logger.WithFields( and logger.WithError( or what some will changed the logrus.Fields in sub method under func (b *backupReconciler) runBackup( ?
Just let the logs use the init logrus.Fields.

But this change will be very weird for code review, or not the clean code .