fix image carousel image position detection.

[rebornix]

No description provided.

[Copilot]

Pull request overview

This PR fixes chat image carousel positioning by ensuring clicked image lookup prioritizes exact URI matches across all carousel sections (avoiding incorrect selection when multiple images share identical bytes), and by using tool-image URIs as the carousel image identifiers so tool outputs can be matched reliably.

Changes:

• Update carousel section construction to use each extracted image’s uri.toString() as the carousel image id.
• Rework findClickedImageIndex to do a URI-first pass across all sections, then fall back to data matching only if no URI match exists.
• Add targeted tests covering the “identical data, different URI” case and ensuring tool output images use ChatResponseResource URIs as ids.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
src/vs/workbench/contrib/chat/browser/chatImageCarouselService.ts	Uses extracted uri as carousel image id and adjusts click-index resolution to prefer URI matches globally before falling back to data.
src/vs/workbench/contrib/chat/test/browser/chatImageCarouselService.test.ts	Adds regression tests for URI-vs-data precedence and for tool output image ids being the tool image URI.