support multiple questions coming in for chat

[meganrogge]

fix #297408

Singleton carousel widget → DisposableMap of carousels keyed by resolveId. New ones append instead of replacing. Clearing targets a specific carousel by resolveId. CSS stacks them vertically with a gap.

multi-question.mov

[Copilot]

Pull request overview

This PR updates the chat input’s question-carousel rendering so multiple concurrent ask_question flows can be shown and answered without newer carousels replacing (and effectively canceling) earlier ones.

Changes:

• Replace the single question-carousel instance with a DisposableMap keyed by resolveId, allowing multiple carousels to coexist.
• Update clearing logic to remove a specific carousel (by resolveId) or all carousels for a given responseId.
• Adjust CSS so multiple carousels stack vertically with spacing.

Reviewed changes

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

File	Description
src/vs/workbench/contrib/chat/browser/widget/input/chatInputPart.ts	Switches to multi-carousel tracking and updates render/clear/focus logic accordingly.
src/vs/workbench/contrib/chat/browser/widget/chatListRenderer.ts	Clears only the submitted carousel from the input, instead of clearing all.
src/vs/workbench/contrib/chat/browser/widget/chatContentParts/media/chatQuestionCarousel.css	Uses flex column layout + gap to stack multiple carousels in the input area.