Nav Tabs divider not occupying 100% width available

[GomezIvann]

Describe the bug
Each tab of the Nav Tabs component has its divider instead of the main container. This is a bit strange since, normally, in most of the Tabs implemented by other DSs the divider fits 100% of its parent container. Even on our site, we extend this line manually to try to fill the available space. This use case would be widespread in our users when using our component and it currently doesn't have a solution from our side.

This issue is related to #1524. Fixing this one would also fix that one.

Expected behaviour
The divider should occupy the whole width of the parent container.

Screenshots

Additional context
Other Design Systems:

• https://spectrum.adobe.com/page/tabs/ and https://react-spectrum.adobe.com/react-spectrum/Tabs.html
• https://cloudscape.design/components/tabs/?tabId=playground
• https://www.lightningdesignsystem.com/components/tabs/
• https://ant.design/components/tabs