[BUG] only index items are translated in export

[dakira]

Prerequisites

• [x] Able to reproduce the behaviour outside of your code, the problem is isolated to Laravel Excel.
• [x] Checked that your issue isn't already filed.
• [x] Checked if no PR was submitted that fixes this problem.

Versions

• PHP version: 7.3
• Laravel version: 5.8.17
• Nova version: 2.0.5
• Package version: 3.1.13 and 1.1.4

Description

The export picks up on translated fields like this:

public function fields(Request $request)
{
    return [
        Text::make(__('Company'), 'company'),
        Text::make(__('Lastname'), 'lastname')->sortable()
            ->rules('required', 'max:255'),
        Text::make(__('Firstname'), 'firstname')
    ]
}

They show up translated in the excel file, but only when they are on the index. For fields that are excluded from the index no translation is shown.

[patrickbrouwers]

Hey @dakira can you show the code you have for the export action?