debugger: Start on tabless design (#27837)

![image](https://github.com/user-attachments/assets/1cd54b70-5457-4c64-95bd-45a7055ea165)

Release Notes:

- N/A

---------

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

crates/debugger_ui/src/attach_modal.rs

@@ -54,6 +54,7 @@ impl AttachModal {
     pub fn new(
         project: Entity<project::Project>,
         debug_config: task::DebugTaskDefinition,
+        modal: bool,
         window: &mut Window,
         cx: &mut Context<Self>,
     ) -> Self {
@@ -74,13 +75,14 @@ impl AttachModal {
             })
             .collect();
         processes.sort_by_key(|k| k.name.clone());
-        Self::with_processes(project, debug_config, processes, window, cx)
+        Self::with_processes(project, debug_config, processes, modal, window, cx)
     }
 
     pub(super) fn with_processes(
         project: Entity<project::Project>,
         debug_config: task::DebugTaskDefinition,
         processes: Vec<Candidate>,
+        modal: bool,
         window: &mut Window,
         cx: &mut Context<Self>,
     ) -> Self {
@@ -103,6 +105,7 @@ impl AttachModal {
                 window,
                 cx,
             )
+            .modal(modal)
         });
         Self {
             _subscription: cx.subscribe(&picker, |_, _, _, cx| {