"Copy failed!" error when attempting to "Copy page as Markdown for LLMs"

[Sachindu-Nethmin]

Bug: "Copy failed!" error when copying page as Markdown

Description
Selecting the "Copy page as Markdown for LLMs" option from the dropdown menu fails to copy the page content. Instead of copying to the clipboard, the UI immediately displays a "Copy failed!" error in both the top toggle button and the menu item itself.

Steps to Reproduce

1. Open the dropdown menu.
2. Select Copy page as Markdown for LLMs.
3. Observe the "Copy failed!" error.

Expected Result
The page content copies to the clipboard in Markdown format.

Actual Result
The copy action fails, and the UI updates to show an error state.

[Sachindu-Nethmin]

I would like to work on this issue. Could you please assign it to me?