[TrilinosApplication] Fix ReadMatrix and TrilinosExperimentalSpace function to use getLocalNumRows for local row count

[loumalouomega]

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name: ✨ Feature
about: Support Trilinos 16.1+ by adding API probe for row-count method

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📝 Description

• Problem: Trilinos 16.1 removed the deprecated getNodeNumRows() method from Tpetra::CrsMatrix.
  Builds against Trilinos 16.1+ fail with:

  error: 'class Tpetra::CrsMatrix<...>' has no member named 'getNodeNumRows';
         did you mean 'getLocalNumRows'?

• Solution: Implemented a compile-time API probe using SFINAE overload resolution to detect which method is available:
  • Tries getLocalNumRows() first (Trilinos 16.1+)
  • Falls back to getNodeNumRows() (older versions)

This approach requires no version macros and works automatically across all Trilinos versions without user configuration.

Key changes

• Added Detail::GetNumLocalRows<TMatrix>() helper that dispatches to the appropriate implementation at compile time.
• Uses SFINAE overload ranking: int parameter prefers the newer API. long parameter acts as fallback.
• Single call site updated in ReadMatrix() to use the helper.
• Includes appropriate documentation in the helper functions.
• Also applying the same pattern to other deprecated Tpetra calls in trilinos_space_experimental.h if those also fail on Trilinos 16.1.

Validation

• Code now compiles against both Trilinos < 16.1 (with getNodeNumRows) and Trilinos 16.1 (with getLocalNumRows)
• Functionality remains unchanged; no behavioral differences

🆕 Changelog

• Fix ReadMatrix function to use getLocalNumRows for local row count
• Add Detail namespace and GetNumLocalRows utility to TrilinosExperimemntalSpace