settings: Always show the sidebar in case of settings page.

[shubham-padia]

Fixes #1077.
Users were getting stuck in the settings page, unable to click on an organisation tab to go back. Enabling the sidebar for settings page in all cases will help ensure that the users can navigate back when needed.

Screenshots and screen captures:

Platforms this PR was tested on:

• Windows
• macOS
• Linux (specify distro)

Self-review checklist

• Self-reviewed the changes for clarity and maintainability
  (variable names, code reuse, readability, etc.).

Communicate decisions, questions, and potential concerns.

• Explains differences from previous plans (e.g., issue description).
• Highlights technical choices and bugs encountered.
• Calls out remaining decisions and concerns.
• Automated tests verify logic where appropriate.

Individual commits are ready for review (see commit discipline).

• Each commit is a coherent idea.
• Commit message(s) explain reasoning and motivation for changes.

Completed manual review and testing of the following:

• Visual appearance of the changes.
• Responsiveness and internationalization.
• Strings and tooltips.
• End-to-end functionality of buttons, interactions and flows.
• Corner cases, error conditions, and easily imagined bugs.

[timabbott]

I think this should not be hard to finish, but we do need to resolve my correctness concerns above before it's ready for Anders to review.

[timabbott]

This version looks good to me.