Add width and height properties for OpenSeadragon 6.0.0 compatibility

[cavenel]

In OpenSeadragon 6, on tilesource ready (https://github.com/openseadragon/openseadragon/blob/767c05aa98985ce1df24f6cc73cda49abd5b047f/src/tilesource.js#L162)
this.dimensions is overwritten by source.width and source.height

In OSD5, there is no ready event handler that overwrites dimensions. The initialization logic (this.dimensions = new $.Point(options.width, options.height)) only runs in the else branch, i.e., when there's no URL and configuration is inline. When a URL is provided, OSD 5 just sets safe defaults and calls getImageInfo, and whatever the subclass sets on this stays untouched.

Simple fix is to add width and height to the OMEZarrTileSource, but would be good to understand why it changed in OSD 6.

[Copilot]

Pull request overview

Adds width and height fields to OMEZarrTileSource so OpenSeadragon 6’s ready-time dimension overwrite logic can read correct image dimensions from the tile source instance.

Changes:

• Introduce width and height properties on OMEZarrTileSource.
• Populate width/height during getImageInfo once array shape is known.

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[Copilot]

Pull request overview

Copilot reviewed 2 out of 2 changed files in this pull request and generated 3 comments.

[Copilot]

Pull request overview

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

[Copilot]

Pull request overview

Copilot reviewed 3 out of 4 changed files in this pull request and generated 4 comments.

[Copilot]

Pull request overview

Copilot reviewed 3 out of 4 changed files in this pull request and generated 4 comments.