[chore] raster tile layer tests

[igorDykhta]

• missing raster tile layer tests

[Copilot]

Pull Request Overview

This PR adds comprehensive browser tests for the RasterTileLayer to ensure its constructor, data formatting, rendering, configuration updates, and edge-case behaviors are validated, and it hooks the new spec into the test suite.

• Introduces raster-tile-layer-specs.js with tests covering constructor defaults, formatLayerData, renderLayer, config/meta updates, default props, visual channels, pixel tracking, rendering toggles, and error/edge cases.
• Updates index.js to import the new raster tile layer tests.

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File	Description
test/browser/layer-tests/raster-tile-layer-specs.js	Adds end-to-end tests for RasterTileLayer
test/browser/layer-tests/index.js	Imports the new raster tile layer spec file

Comments suppressed due to low confidence (1)

test/browser/layer-tests/raster-tile-layer-specs.js:158

• [nitpick] Test only verifies that stacLayers is an array and its length is non-negative; consider adding assertions to verify that it returns the expected layer count and properties (e.g., instance of TileLayer, correct tileSource or dataset).

  const stacLayers = layer.renderLayer(stacRenderOpts);