Suggested action auto-appends when pasting image

Bug Description

When pasting an image into the chat input, if there is a suggested next action button visible (unconfirmed), the suggested action text is automatically appended to the message along with the image, even when the user only intends to send the image.

Expected Behavior

When pasting an image, only the image should be sent. Suggested actions should only be included if the user explicitly clicks the suggestion button.

Actual Behavior

The suggested action text is automatically appended to the message when pasting an image, without user confirmation.

Steps to Reproduce

1. Perform an action that generates a suggested next action button
2. Without clicking the suggestion, paste an image into the chat input
3. Send the message
4. Observe that both the image AND the suggested action text are sent

Impact

This creates unintended messages where the user only wanted to send an image but also triggers an action they didn't explicitly request.

Environment

• Claude Code CLI
• macOS