Fix CompositeInputStream close handling

[skt-shinyruo]

What is the purpose of the change

Fixes #16117.

Brief changelog

• Continue closing remaining underlying streams when one InputStream.close() throws IOException.
• Preserve the first IOException and attach later close failures as suppressed exceptions.
• Add regression tests for closing all streams and retaining suppressed exceptions.

Verifying this change

• mvn -pl dubbo-remoting/dubbo-remoting-http12 test

[zrlw]

Hope this one will be approved by 2+ committers,
#16118 did the same thing.

[zrlw]

LGTM

[skt-shinyruo]

Thanks for reviewing!

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 60.77%. Comparing base (b65573e) to head (bbde4be).

Additional details and impacted files

@@             Coverage Diff              @@
##                3.3   #16305      +/-   ##
============================================
- Coverage     60.80%   60.77%   -0.04%     
- Complexity    11766    11770       +4     
============================================
  Files          1953     1953              
  Lines         89188    89196       +8     
  Branches      13454    13457       +3     
============================================
- Hits          54235    54211      -24     
- Misses        29391    29412      +21     
- Partials       5562     5573      +11     

Flag	Coverage Δ
integration-tests-java21	32.11% <33.33%> (-0.02%)	⬇️
integration-tests-java8	32.24% <33.33%> (+<0.01%)	⬆️
samples-tests-java21	32.21% <33.33%> (+0.02%)	⬆️
samples-tests-java8	29.74% <11.11%> (-0.12%)	⬇️
unit-tests-java11	59.01% <100.00%> (-0.04%)	⬇️
unit-tests-java17	58.52% <100.00%> (-0.01%)	⬇️
unit-tests-java21	58.50% <100.00%> (+0.01%)	⬆️
unit-tests-java25	58.43% <100.00%> (-0.05%)	⬇️
unit-tests-java8	59.02% <100.00%> (+0.02%)	⬆️

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