[Feature] Return 404 from web view

I have searched the existing feature requests, both open and closed, to make sure this is not a duplicate request.

• Yes

The feature

Currently, the Immich web client (every path except for /s, /share, and /api) is rendered clientside. This means that the server does not have the ability to determine the validity of a path, leading to the following behavior:



This is currently not easily fixable, but may be doable in the future if we switch to server side rendering, possibly with an upgrade to a newer version of SvelteKit. This FR can track the behavior for the time being.

Platform

• Server
• Web
• Mobile