[fix] Run messageReadStats metrics registerFailedEvent execute on netty threa…

[zhouxy0809]

Fix: follow to https://github.com/streamnative/kop/issues/2006

Motivation

the metric of messageReadStats.registerFailedEvent() not execute in netty thread executor, and not consistent with context code

Modifications

execute messageReadStats.registerFailedEvent() in netty.EventExecutor

Documentation

Check the box below.

Need to update docs?

• [ ] doc-required

  (If you need help on updating docs, create a doc issue)

• [x] no-need-doc

  (Please explain why)

• [ ] doc

  (If this PR contains doc changes)

[codecov[bot]]

Codecov Report

Merging #2007 (1a808ad) into master (014340d) will increase coverage by 0.01%. The diff coverage is 0.00%.

@@             Coverage Diff              @@
##             master    #2007      +/-   ##
============================================
+ Coverage     16.95%   16.96%   +0.01%     
- Complexity      728      729       +1     
============================================
  Files           191      191              
  Lines         14307    14309       +2     
  Branches       1339     1339              
============================================
+ Hits           2426     2428       +2     
- Misses        11703    11704       +1     
+ Partials        178      177       -1     

Files Changed	Coverage Δ
...tive/pulsar/handlers/kop/storage/PartitionLog.java	8.13% <0.00%> (-0.03%)	:arrow_down:

... and 1 file with indirect coverage changes