fix: Use explicit Throwable type in AvroConversionUtils catch clause

[yihua]

Describe the issue this Pull Request addresses

The bare case e => in AvroConversionUtils.scala:70 catches all Throwables implicitly, triggering a Scala compiler warning.

Summary and Changelog

This PR makes the intent explicit with case e: Throwable => to silence the warning without changing behavior

Impact

Addressed build warning

Risk Level

none

Documentation Update

none

Contributor's checklist

• Read through contributor's guide
• Enough context is provided in the sections above
• Adequate tests were added if applicable

[hudi-bot]

CI report:

• a52a850 UNKNOWN

Bot commands

@hudi-bot supports the following commands:

• @hudi-bot run azure re-run the last Azure build

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 68.48%. Comparing base (14a549f) to head (64be4ac).
⚠️ Report is 3 commits behind head on master.

Additional details and impacted files

@@             Coverage Diff              @@
##             master   #18342      +/-   ##
============================================
- Coverage     68.48%   68.48%   -0.01%     
+ Complexity    27362    27359       -3     
============================================
  Files          2420     2420              
  Lines        132127   132127              
  Branches      15909    15909              
============================================
- Hits          90491    90488       -3     
+ Misses        34627    34626       -1     
- Partials       7009     7013       +4     

Flag	Coverage Δ
common-and-other-modules	44.37% <100.00%> (+<0.01%)	⬆️
hadoop-mr-java-client	45.16% <ø> (+0.05%)	⬆️
spark-client-hadoop-common	48.33% <0.00%> (+<0.01%)	⬆️
spark-java-tests	48.91% <100.00%> (ø)
spark-scala-tests	45.11% <100.00%> (-0.01%)	⬇️
utilities	38.70% <100.00%> (-0.01%)	⬇️

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

Files with missing lines	Coverage Δ
...in/scala/org/apache/hudi/AvroConversionUtils.scala	97.05% <100.00%> (ø)

... and 12 files with indirect coverage changes

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