chore: Reenable nested types for CometFuzzTestSuite with int96

[mbutrovich]

Which issue does this PR close?

Closes #.

Rationale for this change

apache/datafusion#16058 Fixed schema coercion for int96 within nested types. We should reenable CometFuzzTestSuite to exercise this code path.

What changes are included in this PR?

CometFuzzTestSuite's int96 test will now use nested types in the schema.

How are these changes tested?

CometFuzzTestSuite.

[mbutrovich]

This should be ready for review now.

[kazuyukitanimura]

pending with CI

[andygrove]

🎉

[andygrove]

Perhaps this PR should also remove this item from the compatibility guide?

- Reading legacy INT96 timestamps contained within complex types can produce different results to Spark

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 58.62%. Comparing base (f09f8af) to head (467e317).
Report is 202 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff              @@
##               main    #1761      +/-   ##
============================================
+ Coverage     56.12%   58.62%   +2.50%     
- Complexity      976     1140     +164     
============================================
  Files           119      130      +11     
  Lines         11743    12663     +920     
  Branches       2251     2362     +111     
============================================
+ Hits           6591     7424     +833     
- Misses         4012     4054      +42     
- Partials       1140     1185      +45     

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[mbutrovich]

Perhaps this PR should also remove this item from the compatibility guide?

- Reading legacy INT96 timestamps contained within complex types can produce different results to Spark

Good catch, thank you!