Restore namespace parameter to actions!

This does not yet fix `derive(Action)`, but will conflict with a lot so
wanted to merge quickly.

crates/command_palette2/src/command_palette.rs

@@ -19,7 +19,7 @@ use util::{
 use workspace::{ModalView, Workspace};
 use zed_actions::OpenZedURL;
 
-actions!(Toggle);
+actions!(command_palette, [Toggle]);
 
 pub fn init(cx: &mut AppContext) {
     cx.set_global(HitCounts::default());