VS Code: Drag-and-drop image into chat disables Send button

Description

After updating Claude Code VS Code extension to version 2.1.84, dragging and dropping a screenshot/image into the chat input loads the image preview but permanently disables the Send button. The only way to send a message is to remove the image first.

This worked in the previous release.

Steps to reproduce

1. Open Claude Code in VS Code
2. Take a screenshot or have an image file
3. Drag and drop it into the chat input
4. Image preview appears in the input area
5. Send button is grayed out / disabled
6. Cannot send the message until the image is removed

Expected behavior

Send button should remain enabled when an image is attached, allowing image + text messages.

Environment

• Claude Code extension version: 2.1.84
• Platform: macOS (Darwin 23.6.0, ARM64)
• VS Code: latest