fix(substrait): preserve nested nullability

[huymq1710]

Which issue does this PR close?

• Closes Substrait literal conversion should preserve nested nullability #22095

Rationale for this change

Nested literal types could mismatch the declared VirtualTable schema, causing valid Values plans to fail

What changes are included in this PR?

• Convert Values literals using expected schema fields
• Preserve nested Struct, List, and Map nullability
• Keep schema-less literal conversion unchanged

Are these changes tested?

Yes,
Added unit, round-trip, deprecated Values, and integration tests

Are there any user-facing changes?

Substrait Values plans now preserve nested nullability and avoid schema/literal type mismatches

[codecov-commenter]

Codecov Report

❌ Patch coverage is 91.34615% with 45 lines in your changes missing coverage. Please review.
✅ Project coverage is 81.05%. Comparing base (e64e3f7) to head (9418567).
⚠️ Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
...ubstrait/src/logical_plan/consumer/expr/literal.rs	94.47%	8 Missing and 10 partials ⚠️
...ubstrait/src/logical_plan/producer/expr/literal.rs	82.43%	2 Missing and 11 partials ⚠️
...ubstrait/src/logical_plan/consumer/rel/read_rel.rs	90.72%	4 Missing and 5 partials ⚠️
...usion/substrait/src/logical_plan/producer/types.rs	84.21%	0 Missing and 3 partials ⚠️
...usion/substrait/src/logical_plan/consumer/types.rs	50.00%	0 Missing and 2 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #24158      +/-   ##
==========================================
+ Coverage   81.02%   81.05%   +0.02%     
==========================================
  Files        1106     1106              
  Lines      380718   381147     +429     
  Branches   380718   381147     +429     
==========================================
+ Hits       308489   308923     +434     
+ Misses      54001    53967      -34     
- Partials    18228    18257      +29     

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[huymq1710]

I see, Codecov was newly added
I added more test in 22cf4bc commit