Created e2e accessibility text for default form text

test(GlFormText): Axe Accessibility Test for GlFormText

Closes #2541

See merge request gitlab-org/gitlab-ui!4046



Merged-by: Lukas 'ai-pi' Eipert <leipert@gitlab.com>
Approved-by: Lukas 'ai-pi' Eipert <leipert@gitlab.com>
Co-authored-by: Drew Cauchi <drewcauchi@gmail.om>

Add gl-lg-display-grid css class

Closes #2567

See merge request gitlab-org/gitlab-ui!4043



Merged-by: Olena Horal-Koretska <ohoralkoretska@gitlab.com>
Approved-by: Andrew Fontaine <afontaine@gitlab.com>
Approved-by: Olena Horal-Koretska <ohoralkoretska@gitlab.com>
Reviewed-by: Andrew Fontaine <afontaine@gitlab.com>
Co-authored-by: Ivan Shtyrliaiev <ee923925@gmail.com>

# [78.6.0](gitlab-org/gitlab-ui@v78.5.0...v78.6.0) (2024-03-25)

### Features

* **css:** Add gl-lg-display-grid css class ([9dfa9d97](gitlab-org/gitlab-ui@9dfa9d97))