Description

New tabs were opened at the end of the tab list. Now they are opened next to the current tab, or the original tab if the new tab is a duplicate.

Motivation and Context

This will likely place related tabs adjacently.

How Has This Been Tested?

On Arch Linux.

Checklist

• If the key of a setting is changed, the old attribute is updated or it is resolved in SettingsUpdater.
• If there are changes of the text displayed in the UI, they are wrapped in tr() or QCoreApplication::translate().
• If needed, I have opened a pull request or an issue to update the documentation.
• If these changes are notable, they are documented in CHANGELOG.md.