Fix DBF field metadata for NativeAOT consumers

[PrzemyslawKlys]

DBAClientX.Dbf consumers fail NativeAOT publication with IL2093 and IL2111. This change carries the inherited DbDataReader.GetFieldType metadata contract through the DBF scalar-type map and column schema, and scopes the linker suppression to the schema table's use of Type values as data. The .NET 8 and .NET 10 targets enable the SDK trim/AOT analyzers with warnings treated as errors.

Validation: all 28 DBF tests pass on each runtime. Fully rooted macOS arm64 NativeAOT builds run on .NET 8 and .NET 10; schema types and typed rows from the independent dBase, FoxPro and Visual FoxPro fixtures match managed execution. The unsigned three-target package contains the modern trimming metadata. A separate packed OfficeIMO Reader consumer also publishes and runs under NativeAOT using the fixed owner package.

OfficeIMO #3001 consumes this codec through its DBF Reader adapter. Publish a new DBAClientX.Dbf version containing this fix after merge, then update that consumer's public pin before rerunning its NativeAOT release gates.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 55.88%. Comparing base (755d371) to head (665ee2c).

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #280      +/-   ##
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- Coverage   55.89%   55.88%   -0.01%     
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  Files         447      447              
  Lines       31389    31389              
  Branches     6265     6265              
==========================================
- Hits        17545    17542       -3     
- Misses      11898    11900       +2     
- Partials     1946     1947       +1     

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