Fix code copying in Console blocks

[bmorelli25]

Closes #720.

Tested on console code blocks and non-console code blocks:

cursorful-video-1741823540522.mp4

[Copilot]

Pull Request Overview

This PR fixes code copying behavior in Console blocks by updating the logic for retrieving text from code elements.

• Changes the text extraction from using the whole target element to iterating over individual elements
• Joins the filtered text from each block using newline characters

Comments suppressed due to low confidence (2)

src/Elastic.Markdown/Assets/copybutton.ts:246

• The change now extracts text only from elements. Consider adding a fallback behavior in case target.querySelectorAll('code') returns an empty list to ensure no necessary text is inadvertently omitted.

let text = Array.from(target.querySelectorAll('code')).map(code => filterText(code, excludes)).join('\n');

src/Elastic.Markdown/Assets/copybutton.ts:246

• Ensure that the new extraction logic meets all requirements for cases where the target element may contain non- text that should be included in the copied output.

let text = Array.from(target.querySelectorAll('code')).map(code => filterText(code, excludes)).join('\n');