Don't try keychain after authentication fails

Previously, we were achieving this by deleting the keychain item, but this can sometimes fail which leads to an infinite loop. Now, we explicitly never try the keychain when reattempting authentication after authentication fails.

Co-Authored-By: Max Brunsfeld <maxbrunsfeld@gmail.com>

crates/server/src/rpc.rs

@@ -5021,7 +5021,7 @@ mod tests {
                 });
 
             client
-                .authenticate_and_connect(&cx.to_async())
+                .authenticate_and_connect(false, &cx.to_async())
                 .await
                 .unwrap();