[fix][fn] Fix graceful Pulsar Function shutdown so that consumers and producers are closed

[lhotari]

Fixes #25154

Motivation

While investigating a flaky test, I noticed that a Pulsar Function instance didn't shutdown gracefully due to interrupted thread status. The change in #25140 brought this to surface since closing producers gracefully requires that the calling thread isn't interrupted.

Modifications

Clear the interrupted state of the current thread in the Function instance before proceeding to call the close method.

Documentation

• doc
• doc-required
• doc-not-needed
• doc-complete

[liangyepianzhou]

LGTM

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 72.53%. Comparing base (413387b) to head (ab15c09).
⚠️ Report is 1 commits behind head on master.

Additional details and impacted files

@@              Coverage Diff              @@
##             master   #25157       +/-   ##
=============================================
+ Coverage     37.48%   72.53%   +35.05%     
- Complexity    13220    34226    +21006     
=============================================
  Files          1899     1956       +57     
  Lines        150586   154750     +4164     
  Branches      17159    17645      +486     
=============================================
+ Hits          56440   112241    +55801     
+ Misses        86464    33539    -52925     
- Partials       7682     8970     +1288     

Flag	Coverage Δ
inttests	25.74% <0.00%> (+0.09%)	⬆️
systests	22.41% <100.00%> (-0.03%)	⬇️
unittests	73.47% <100.00%> (+39.31%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files with missing lines	Coverage Δ
...ulsar/functions/instance/JavaInstanceRunnable.java	73.17% <100.00%> (+12.14%)	⬆️

... and 1417 files with indirect coverage changes

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