fix: investigation landing page errors if not available in specific locale

[alexgoff]

Describe the bug
When visiting an investigation landing page, that is not enabled for the current locale, the page throws an application error

To Reproduce
Steps to reproduce the behavior:

1. Go to https://investigations.rubinobs.org/fr/exploding-stars
2. See application error

Expected behavior
Should either redirect back to available locale, or show a message that the investigation is not available in this language and have links to other languages.

webpack-d0d07527d699c61e.js:1 
        
        
       GET https://investigations.rubinobs.org/_next/static/chunks/app/%5Blocale%5D/not-found-2e57f6927b30580e.js net::ERR_ABORTED 403 (Forbidden)
l.l @ webpack-d0d07527d699c61e.js:1
l.f.j @ webpack-d0d07527d699c61e.js:1
(anonymous) @ webpack-d0d07527d699c61e.js:1
l.e @ webpack-d0d07527d699c61e.js:1
(anonymous) @ 7023-26fce0a4ceccb1d4.js:2
(anonymous) @ 7023-26fce0a4ceccb1d4.js:2
t @ 7023-26fce0a4ceccb1d4.js:2
Promise.then
t @ 7023-26fce0a4ceccb1d4.js:2
Promise.then
t @ 7023-26fce0a4ceccb1d4.js:2
Promise.then
t @ 7023-26fce0a4ceccb1d4.js:2
Promise.then
t @ 7023-26fce0a4ceccb1d4.js:2
Promise.then
t @ 7023-26fce0a4ceccb1d4.js:2
Promise.then
t @ 7023-26fce0a4ceccb1d4.js:2
Promise.then
t @ 7023-26fce0a4ceccb1d4.js:2
Promise.then
t @ 7023-26fce0a4ceccb1d4.js:2
Promise.then
t @ 7023-26fce0a4ceccb1d4.js:2
Promise.then
N @ 7023-26fce0a4ceccb1d4.js:2
t.createFromReadableStream @ 7023-26fce0a4ceccb1d4.js:2
10353 @ 7023-26fce0a4ceccb1d4.js:1
l @ webpack-d0d07527d699c61e.js:1
(anonymous) @ 7023-26fce0a4ceccb1d4.js:1
n @ 7023-26fce0a4ceccb1d4.js:1
n @ 7023-26fce0a4ceccb1d4.js:1
11028 @ 7023-26fce0a4ceccb1d4.js:1
l @ webpack-d0d07527d699c61e.js:1
n @ main-app-55bbd77d79f9187f.js:1
(anonymous) @ main-app-55bbd77d79f9187f.js:1
l.O @ webpack-d0d07527d699c61e.js:1
c @ webpack-d0d07527d699c61e.js:1
(anonymous) @ fd9d1056-30f126668f3c2622.js:1Understand this error
7023-26fce0a4ceccb1d4.js:1 ChunkLoadError: Loading chunk 6082 failed.
(error: https://investigations.rubinobs.org/_next/static/chunks/app/%5Blocale%5D/not-found-2e57f6927b30580e.js)
    at l.f.j (webpack-d0d07527d699c61e.js:1:3501)
    at webpack-d0d07527d699c61e.js:1:1427
    at Array.reduce (<anonymous>)
    at l.e (webpack-d0d07527d699c61e.js:1:1393)
    at 7023-26fce0a4ceccb1d4.js:2:18878
    at 7023-26fce0a4ceccb1d4.js:2:19080
    at t (7023-26fce0a4ceccb1d4.js:2:19283)