Fix compute_indicatormatrix and compute_intersectionmatrix for non-default index

[Blizzeq]

Closes # (none).

Changes proposed in this Pull Request

When orig or dest are passed as a GeoSeries with a non-default index (e.g. filtered indices, arbitrary integer labels or strings), compute_indicatormatrix and compute_intersectionmatrix failed with KeyError or indexed wrong geometries. In Shapely >= 2.0, STRtree.query yields positional indices, while indexing the GeoSeries directly looked up index labels instead of positions.

Converting orig and dest to lists ensures positional lookup matches STRtree results regardless of pandas index labels. Added regression tests covering custom and out-of-order indices.

Checklist

• Code changes are sufficiently documented; i.e. new functions contain docstrings and further explanations may be given in doc.
• Unit tests for new features were added (if applicable).
• Newly introduced dependencies are added to environment.yaml, environment_docs.yaml and setup.py (if applicable).
• A note for the release notes doc/release_notes.rst of the upcoming release is included.
• I consent to the release of this PR's code under the MIT license.