VectorMap: support mixed geometry types in GeoJSON (T1327745)

[pharret31]

No description provided.

[Copilot]

Pull request overview

This PR updates the VectorMap layer projection logic to correctly handle GeoJSON line layers that contain a mix of LineString and MultiLineString geometries (T1327745), preventing incorrect projection results when the first feature’s geometry differs from subsequent features.

Changes:

• Reworked line projection selection to be adaptive per feature, using the feature’s GeoJSON geometry.type when available.
• Adjusted/extended VectorMap QUnit tests to cover mixed LineString/MultiLineString GeoJSON feature collections.
• Updated expectations for degenerate MultiLineString projection output to match the new adaptive behavior.

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated no comments.

File	Description
packages/devextreme/testing/tests/DevExpress.viz.vectorMap/mapLayer_new.tests.js	Adds coverage for mixed LineString/MultiLineString GeoJSON in line layers and updates degenerate output expectation.
packages/devextreme/testing/tests/DevExpress.viz.vectorMap/mapLayer.strategies.tests.js	Updates strategy projection tests to pass explicit geometry type into the line projection logic.
packages/devextreme/js/__internal/viz/vector_map/map_layer.ts	Implements per-element adaptive line projection and passes GeoJSON geometry.type into projection.