API: addMatrixConsIndicator supports ExprCons

[Zeroto521]

closes #1034

[Zeroto521]

This pr does not need to be added to the changelog file.
And it's a patch to addMatrixConsIndicator, which is an unreleased feature.

[Copilot]

Pull Request Overview

This PR extends the addMatrixConsIndicator API to support both ExprCons and MatrixExprCons constraint types, previously only supporting MatrixExprCons.

Key changes:

• Updated addMatrixConsIndicator to accept ExprCons in addition to MatrixExprCons
• When an ExprCons is passed, the method now delegates to addConsIndicator
• Added comprehensive test coverage for the new ExprCons functionality

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 2 comments.

File	Description
src/pyscipopt/scip.pxi	Updated addMatrixConsIndicator signature and implementation to handle both ExprCons and MatrixExprCons, delegating to addConsIndicator for ExprCons inputs
tests/test_matrix_variable.py	Added test cases to verify ExprCons support and ensure proper type checking with TypeError for invalid inputs

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[Joao-Dionisio]

Thank you, once again!