Change cookie expiration date when Impersonating

[LuizCristino]

This change resolves an odd behavior that occurs when there are multiple panels with multiple authentication guards.

When you switch from one panel to another after invalidating the token, Laravel attempts to refresh the current token with the remember me token.

This invalidates the token for the other panel, breaking the impersonating banner.

[jszobody]

Thanks for the PR! The diagnosis matches Laravel's remember-me token rotation behavior — when a different guard hits the remember path, it rotates the DB token and invalidates the value we stashed in the session, breaking leave(). Clearing the cookie at enter() time avoids that, and extractAuthCookieFromSession() restores it on leave() so the user's remember-me survives the round trip.

One small ask before merging — could you swap the manual -2628000 for cookie()->forget()? Same effect, no magic number, and it stays consistent with the cookie()/session() helper style used elsewhere in this class:

cookie()->queue(cookie()->forget($key));

We'll handle adding test coverage for the multi-panel / multi-guard scenario on our side.

[LuizCristino]

@jszobody Thank you for your time. I didn't know about the cookie forget method; thanks for pointing it out.

I made the suggested changes.