BFieldBody cannot resolve BField #36

Overview of the problem

Buefy version: buefy-next (67ecf3a)
Vuejs version: 3.3.4
OS/Browser: macOS/@vue/test-utils

Description

<b-field-body> cannot resolve <b-field> unless <b-field> is globally installed; e.g., Buefy is installed as a plugin.
You will see warning like the following:

[Vue warn]: Failed to resolve component: b-field

or:

[Vue warn]: Component is missing template or render function.

Steps to reproduce

A user cannot directly use <b-field-body> because it is not exported from Buefy, though, I encountered this while working on unit tests of Colorpicker:

• Port Unit Tests. #1

I have not confirmed on a browser but I think we could reproduce this if we specifically import Field without installing Buefy as a plugin and use it with horizontal flag:

<b-field horizontal label="test">
  <b-input type="text"></b-input>
</b-field>

Expected behavior

No warning is shown.

Actual behavior

The warning is shown.