Improve command logging and log_err module paths (#39674)

Prior we only logged the crate in `log_err`, which is not too helpful.
We now assemble the module path from the file system path.

Release Notes:

- N/A *or* Added/Fixed/Improved ...

crates/repl/src/repl_sessions_ui.rs

@@ -6,7 +6,6 @@ use gpui::{
 use project::ProjectItem as _;
 use ui::{ButtonLike, ElevationIndex, KeyBinding, prelude::*};
 use util::ResultExt as _;
-use workspace::WorkspaceId;
 use workspace::item::ItemEvent;
 use workspace::{Workspace, item::Item};
 
@@ -192,15 +191,6 @@ impl Item for ReplSessionsPage {
         false
     }
 
-    fn clone_on_split(
-        &self,
-        _workspace_id: Option<WorkspaceId>,
-        _window: &mut Window,
-        _: &mut Context<Self>,
-    ) -> Option<Entity<Self>> {
-        None
-    }
-
     fn to_item_events(event: &Self::Event, mut f: impl FnMut(workspace::item::ItemEvent)) {
         f(*event)
     }