Fix logger prefix for partition session log events and print correct consumer name

[pnv1]

No description provided.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 50.00000% with 3 lines in your changes missing coverage. Please review.

Project coverage is 58.75%. Comparing base (4ece287) to head (096af61).

Files with missing lines	Patch %	Lines
...tech/ydb/topic/read/impl/PartitionSessionImpl.java	40.00%	2 Missing and 1 partial ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##             master     #457      +/-   ##
============================================
- Coverage     58.75%   58.75%   -0.01%     
+ Complexity     2171     2170       -1     
============================================
  Files           320      320              
  Lines         12938    12942       +4     
  Branches       1269     1269              
============================================
+ Hits           7602     7604       +2     
- Misses         4720     4721       +1     
- Partials        616      617       +1     

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