Copy authorization field

[viktordanko]

Describe the bug
As a user, I would like to copy value of the authorization header in the same way as I can do with the other headers in Request Headers

To Reproduce
Select some query or mutation which includes authorization header.

1. Go to Headers tab
2. Click on authorization header
3. Value is not copied.

• OS: [e.g. macOS]
• Chrome Version: 109.0.5414.87 (Official Build) (arm64)