Opera workspaces: saving all active tabs instead of just one

[miso-belica]

Describe the bug
Opera has concept of Workspaces. When I have several of them active and I click on the SingleFile extension to save the current page it triggers saving of other websites in the workspaces - probably because they are also active.

To Reproduce
Steps to reproduce the behavior:

1. Install Opera + SingleFile extension from Chrome store
2. Activate workspaces in settings and create at least one with open website in all of them.
3. Save the current website using SingleFile but multiple saving dialogs are popped-up for websites in other workspaces.

Expected behavior
Only the current website is offered to save.

Screenshots

Environment

• OS: Win 11 Pro
• Browser: Opera
• Version: 123.0.5669.47