Image paste disabled in 'tell Copilot what to do differently' prompt; escaped image appears in main prompt

[loganrosen]

Description

When Copilot asks for approval to run a tool call and you choose "No, and tell Copilot what to do differently", the follow-up text input doesn't accept image pastes. If you paste an image anyway and then hit Escape to cancel, the pasted image data shows up in the main prompt instead.

Steps to Reproduce

1. Trigger a tool call that requires approval (e.g. a shell command)
2. Select "No, and tell Copilot what to do differently"
3. Attempt to paste an image from the clipboard into the follow-up input
4. Press Escape to cancel

Expected Behavior

• Either: the follow-up input accepts image pastes the same way the main prompt does
• Or: pressing Escape discards the pasted content entirely

Actual Behavior

• The follow-up input does not accept image pastes
• After pressing Escape, the image that was pasted appears in the main prompt input

Environment

• Platform: macOS
• Version: GitHub Copilot CLI 0.0.414.
  Run 'copilot update' to check for updates.