White Border for Labels Change not in v6.0.0

[FaidJalal19]

Bug description

Screenshots/recordings

No response

Superset version

master / latest-dev

Python version

3.11

Node version

16

Browser

Chrome

Additional context

#40468
This PR is not merged in v.6.0.0

Checklist

• I have searched Superset docs and Slack and didn't find a solution to my problem.
• I have searched the GitHub issue tracker and didn't find a similar bug report.
• I have checked Superset's logs for errors and if I found a relevant Python stacktrace, I included it here as text in the "additional context" section.

[rusackas]

That fix merged via #40468 after both 6.0.0 and 6.1.0 had already shipped, so it never made it into either release. It's on master now and will be in the next one.