"linkNewTab" config setting seems to have no effect

[howells]

Description

Even though linkNewTab is set to true in both of the configs I use for Redactor, the checkbox is never actually checked when creating a new link.

https://share.cleanshot.com/TlVhTByb
https://share.cleanshot.com/2Tx9GRLX

https://share.cleanshot.com/8fW7BTRY

Steps to reproduce

1. Set linkNewTab to true
2. Create a new link

Additional info

• Craft version: 4.5.3
• Plugins & versions: Redactor 3.0.4