Fix $persist breaking Alpine when Tabs are used in modals

[jackwh]

Description

We can persist the currently active Tab to localStorage:

Tabs::make('Example Tabs')
                ->persistTab(true)
                ->id('example-tabs')
                ->tabs([...])

I can see the value being updated and written in devtools when the tab is changed. However, when tabs are used in a modal which is being dismissed, the value of tab is incorrectly set to undefined during a Livewire commit hook.

When opening the modal again, the UI breaks and nothing is rendered. This error appears in the console:

The fix seems to be to fall back to the current tab, instead of trying to persist a potentially undefined array offset.

Visual changes

N/A

Functional changes

• Code style has been fixed by running the composer cs command.
• Changes have been tested to not break existing functionality.
• Documentation is up-to-date.

[jackwh]

Related Alpine PR: alpinejs/alpine#4128

[thethunderturner]

Hello, I have a similar issue

Not sure if they are related but I just have a modal action in my header, and when I press confirm, the action is "loading" and I get this error in the console