don't pad hidden sidebar on build and wiki pages

What does this MR do?

• make console scroll button visible on Builds pagee
• remove extra padding on right side of wiki pages

Are there points in the code the reviewer needs to double check?

• Should the collapsed sidebar be visible on these pages instead?
• Are there other pages with invisible collapsed sidebar?

Screenshots (if relevant)

Does this MR meet the acceptance criteria?

• Changelog entry added, if necessary
• [ ] Documentation created/updated
• [ ] API support added
• Tests
  • Added for this feature/bug
  • All builds are passing
• Conform by the merge request performance guides
• Conform by the style guides
• Branch has no merge conflicts with master (if it does - rebase it please)
• Squashed related commits together

What are the relevant issue numbers?

Closes #29830 (closed)