ssh: Improve dismissal behaviour (#18900)

Do not always close current window in SshConnectionModal; only do so
when the window was spawned from ssh modal. Assign unique IDs to "Open
folder" buttons

Closes #ISSUE

Release Notes:

- N/A

crates/recent_projects/src/recent_projects.rs

@@ -1,7 +1,6 @@
 mod dev_servers;
 pub mod disconnected_overlay;
 mod ssh_connections;
-mod ssh_remotes;
 use remote::SshConnectionOptions;
 pub use ssh_connections::open_ssh_project;