First tab in `Tabs` is active even if URL activates another

[alex-code]

Tabs::widget([
  'renderTabContent' => false,
  'items' => [
    [
      'label' => 'Tab 1',
      'url' => ['/default/index'],
    ],
    [
      'label' => 'Tab 2',
      'url' => ['/default/page2'],
    ],
   ]
]);

The Tabs widget uses the Nav widget to build the tabs which causes a conflict with activating.

If the route matches the url for Tab 2 Nav will activate it but Tab 1 has already been activated by Tabs.

I was thinking of either adding an option to turn off Tabs::activateFirstVisibleTab() or if the items have urls then defer activation to Nav.

Q	A
Yii vesion	2.0.35
Yii BS4 version	2.0.8

[alex-code]

@samdark I can do a PR for this but wondering which way is preferable?

An option to disable the Tabs::activateFirstVisibleTab method or if the items use url's then let Nav do the activation?

[simialbi]

In my opinion there should be an active option in items array, if there is none (in none of the items), the first will be activated, otherwhise the one activated.

[alex-code]

@simialbi This is the way it works currently but if you try to activate a tab using the route you get multiple tabs activated.

[samdark]

If there's explicit active we should not check for route, I think.