avm1: Buttons in DTunnel 3D exhibit unexpected behavior (regression)

[Toad06]

Describe the bug

Steps to reproduce

• Click "Skip" to go directly to the main menu.

• Click "Play" and keep the mouse button pressed.

• While still holding the mouse button, move the cursor over "Options", "Instructions", and "Highscore version".
  → In Ruffle, these buttons incorrectly switch to their orange hover state, whereas they should remain white.

Expected behavior

Only the "Play" button should respond during this interaction.
All other buttons must remain white and should not enter their hover state while the mouse button is still held down.

This regression first appeared in nightly-2025-11-08, which suggests that PR #21962 is the likely cause.

Content Location

SWF: https://uploads.ungrounded.net/174000/174308_nhsdtunnel3d.swf
Web: https://www.newgrounds.com/portal/view/174308

Affected platform

Browser's extension

Operating system

Windows 11

Browser

No response

Additional information

No response