Fix PulsarUtils to not share buffer

[Jackie-Jiang]

Fix a bug where a static singleton buffer was shared when reading message

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 85.71429% with 2 lines in your changes are missing coverage. Please review.

Project coverage is 61.46%. Comparing base (59551e4) to head (cc7b30f).
Report is 144 commits behind head on master.

Files	Patch %	Lines
...apache/pinot/plugin/stream/pulsar/PulsarUtils.java	85.71%	2 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##             master   #12671      +/-   ##
============================================
- Coverage     61.75%   61.46%   -0.29%     
+ Complexity      207      198       -9     
============================================
  Files          2436     2452      +16     
  Lines        133233   133840     +607     
  Branches      20636    20765     +129     
============================================
- Hits          82274    82267       -7     
- Misses        44911    45415     +504     
- Partials       6048     6158     +110     

Flag	Coverage Δ
custom-integration1	<0.01% <0.00%> (-0.01%)	⬇️
integration	<0.01% <0.00%> (-0.01%)	⬇️
integration1	<0.01% <0.00%> (-0.01%)	⬇️
integration2	0.00% <0.00%> (ø)
java-11	61.41% <85.71%> (-0.29%)	⬇️
java-21	61.33% <85.71%> (-0.29%)	⬇️
skip-bytebuffers-false	61.45% <85.71%> (-0.30%)	⬇️
skip-bytebuffers-true	61.30% <85.71%> (+33.57%)	⬆️
temurin	61.46% <85.71%> (-0.29%)	⬇️
unittests	61.46% <85.71%> (-0.29%)	⬇️
unittests1	46.36% <ø> (-0.53%)	⬇️
unittests2	27.75% <85.71%> (+0.02%)	⬆️

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[swaminathanmanish]

Fix a bug where a static singleton buffer was shared when reading message

Any context on how you found this problem?

[Jackie-Jiang]

Fix a bug where a static singleton buffer was shared when reading message

Any context on how you found this problem?

I was planning to cleanup some real-time ingestion code, then find this by randomly reading