feat: Prevent Shopping Lists From Rendering If Redirecting

[michael-genson]

What type of PR is this?

(REQUIRED)

• feature

What this PR does / why we need it:

(REQUIRED)

With #3764, if the user is redirected to their sole list, you'll see the shopping list page for a brief moment before redirecting. This PR removes that so it looks more seamless.

Which issue(s) this PR fixes:

(REQUIRED)

N/A

Testing

(fill-in or delete this section)

Tested all scenarios I can think of

[boc-the-git]

@michael-genson can you please explain the specific intention with overrideDisableRedirect? I feel I might be missing something obvious.
Was there an issue without it, in terms of struggling to load that a user wanted to "view all lists", before determining there was only one to view?

[boc-the-git]

Happy for you to merge btw, if you're confident in your decision/testing re my prior question. Still keen to hear an answer though :)

[michael-genson]

Moving the redirect to a watcher sped up the redirect a bit, but as a consequence it's checking every time the choices list changes. There was an edgecase where:

• You're currently viewing all lists (of which there is more than one)
• You only have one list
• If you toggle to show only your lists (which is one list) you'd get redirected immediately

The override fixes this