debugger_ui: Show a toast when setting breakpoints fails (#28815)

Release Notes:

- N/A

---------

Co-authored-by: Anthony Eid <hello@anthonyeid.me>
Co-authored-by: Anthony <anthony@zed.dev>

crates/project/src/project.rs

@@ -1462,7 +1462,7 @@ impl Project {
         config: DebugTaskDefinition,
         cx: &mut Context<Self>,
     ) -> Task<Result<Entity<Session>>> {
-        let Some(worktree) = self.worktrees(cx).next() else {
+        let Some(worktree) = self.worktrees(cx).find(|tree| tree.read(cx).is_visible()) else {
             return Task::ready(Err(anyhow!("Failed to find a worktree")));
         };
 
@@ -1501,7 +1501,7 @@ impl Project {
             let ret = this
                 .update(cx, |project, cx| {
                     project.dap_store.update(cx, |dap_store, cx| {
-                        dap_store.new_session(binary, config, None, cx)
+                        dap_store.new_session(binary, config, worktree.downgrade(), None, cx)
                     })
                 })?
                 .1