[Enhancement]: "Shared link not found" should redirect to log in

[mharveybu]

What features would you like to see added?

"Shared link not found" should advise to log in

• Simplest: Change the text string to "Shared link not found, check you're logged in"
• Better: If they are not logged in, redirect to login page

More details

In my context, I'm often sharing the link with someone I'm trying to encourage to use libre chat - hence they often aren't logged in.
Rather than me explain each time that they should go to the base url, log in, then click my link, it'd be nice if the site helped them fall into the pit of success.

Security

I'm suggesting that this message should always be the same regardless of whether logging in could yield a result.
I'm specifically not suggesting that any behaviour should differ based on whether a shared link exists in the database for the given guid - since that would allow an unauthorized user to check existence.

Dev details

I'm talking about this text string:

LibreChat/client/src/components/Share/ShareView.tsx

Line 57 in a65647a

{localize('com_ui_shared_link_not_found')}

Suggested while using LibreChat v0.7.6

Thanks for the great project!

Which components are impacted by your request?

UI

Pictures

Reference image for current user experience. Remember this could be the first introduction to this app for many users:

No link back to the root page, no hints or explanation

Code of Conduct

• I agree to follow this project's Code of Conduct

Originally posted by @GrahamTheCoder in #5918