Pinned tabs not displayed properly on Firefox 131

[elmagio]

Describe the bug The highlighted pinned tab seems to be cut off with one side not having properly rounded corners.

To Reproduce

1. Pin a tab
2. Highlight one of the pinned tabs
3. It appears cut off on one side

Expected behavior The highlighted pinned tab should be symmetrical with rounded corners on all sides

Screenshots

Setup information

• OS: Ubuntu 24.04
• Installation method: Official DEB repo
• Firefox version: 131
• Theme version: v129
• Optional features enabled: gnomeTheme.normalWidthTabs, gnomeTheme.swapTabClose, gnomeTheme.tabsAsHeaderbar

[rafaelmardojai]

Duplicated of #832, already fixed on master branch.

Will keep this open until I make a release.