Feat: general app settings in the footer

[katspaugh]

What it solves

Resolves #1994

How this PR fixes it

Makes the Settings page work for not Account-specific URLs.

How to test it

Case 1:

• Open Welcome
• Go to Settings via the footer

Case 2:

• Open a Safe
• Go to Safe settings via the sidebar menu

Case 3:

• Check that the Cookie banner still works and looks like before

Screenshots

[github-actions]

Branch preview

✅ Deploy successful!

https://settings--walletweb.review-wallet-web.5afe.dev

[github-actions]

ESLint Summary View Full Report

Annotations are provided inline on the Files Changed tab. You can also see all annotations that were generated on the annotations page.

Type	Occurrences	Fixable
Errors	0	0
Warnings	0	0
Ignored	0	N/A

• Result: ✅ success
• Annotations: 0 total

---

^{Report generated by eslint-plus-action}

[francovenica]

Looks good. I would not noticed the change in the title of the page if I hadn't checked that last commits, good early catch.

I've checked that the settings opens fine from the welcome page or the settings page (the 2 places where you can see the footer)
Tested that the cookies policies still work fine in this new page. I like that the cookie banner that opens for first users closes automatically if you accept selection/accept all in this new preferences/settings page
The settings work fine (prefix, dark mode, data import/export, RPC change)