[FEATURE] Add theme toggle button to Projects page

[srijanravisankar]

Problem

The Projects page currently doesn’t include a theme toggle option, making it inconsistent with the editor page and landing page.

Solution

Add the existing Theme Toggle UI component to the Projects page header next to the action buttons.

Alternative

None. We should reuse the existing Theme Toggle UI component for consistency.

Anything else?

Before:

Enhancement:

[srijanravisankar]

I’m working on this issue and will open a PR. Please assign it to me. 🙌