Double focus outline appearing on MarkdownEditor

[joshblack]

Description

When editing a markdown editor in React, there are two focus outlines present

Steps to reproduce

Focus a markdown editor in React and observe the two focus outlines present

Version

v36.3.0

Browser

No response

[iansan5653]

Based on the recent changes to the PVC component, I think the goal here should be to only show the inner outline (the one on the textarea element itself). We may also want to add some margin but that's not directly related to this bug.

[joshblack]

Issue addressed by revert and fixed in #4008

Opened up: #4017 for the visual change!