Grid rows in stacked view cannot be deleted unless reorderable

[gilleard]

Bug Description

Grid rows in stacked view cannot be deleted unless reorderable.

How to Reproduce

1. Create a grid field
2. Switch to stacked layout
3. Disable reorderable
4. Add a row to the field on the publish form

Extra Detail

The delete button is wrapped in a isReorderable check from this commit resulting in a hidden class hiding the delete row UI.

Fwiw I'm trying to use a grid with max items set to 1 to group some optional fields, but feel like the root issue must be a pretty common use case.

Environment

• Statamic 3.0.1 Pro
• Laravel 7.7.1
• PHP 7.4.5
• No addons installed
• Existing Laravel app