Move workspace::toast_layer::RunAction to zed_actions::toast::RunAction (#32222)

Cleaner to have references to this be `toast::RunAction` matching how it
appears in the keymap, instead of `workspace::RunAction`.

Release Notes:

- N/A

crates/workspace/src/workspace.rs

@@ -15,7 +15,7 @@ mod toast_layer;
 mod toolbar;
 mod workspace_settings;
 
-pub use toast_layer::{RunAction, ToastAction, ToastLayer, ToastView};
+pub use toast_layer::{ToastAction, ToastLayer, ToastView};
 
 use anyhow::{Context as _, Result, anyhow};
 use call::{ActiveCall, call_settings::CallSettings};