title_bar: Remove dependency on vcs_menu (#21011)

This PR removes the `title_bar` crate's dependency on the `vcs_menu`.

The `vcs_menu::OpenRecent` action now resides at
`zed_actions::branches::OpenRecent`.

Release Notes:

- N/A

crates/zed_actions/src/lib.rs

@@ -44,6 +44,12 @@ actions!(
     ]
 );
 
+pub mod branches {
+    use gpui::actions;
+
+    actions!(branches, [OpenRecent]);
+}
+
 pub mod command_palette {
     use gpui::actions;