Tidy up DAP initialization (#28730)

To make DAP work over SSH we want to create the binary
at the project level (so we can wrap it in an `ssh` invocation
transparently).

This means not pushing the adapter down into the session, and resolving
more information ahead-of-time.

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

Release Notes:

- N/A

---------

Co-authored-by: Anthony Eid <hello@anthonyeid.me>
Co-authored-by: Piotr <piotr@zed.dev>
Co-authored-by: Piotr Osiewicz <24362066+osiewicz@users.noreply.github.com>
Co-authored-by: Anthony <anthony@zed.dev>

crates/debugger_ui/src/attach_modal.rs

@@ -228,10 +228,7 @@ impl PickerDelegate for AttachModalDelegate {
         let config = self.debug_config.clone();
         self.project
             .update(cx, |project, cx| {
-                #[cfg(any(test, feature = "test-support"))]
-                let ret = project.fake_debug_session(config.request, None, false, cx);
-                #[cfg(not(any(test, feature = "test-support")))]
-                let ret = project.start_debug_session(config.into(), cx);
+                let ret = project.start_debug_session(config, cx);
                 ret
             })
             .detach_and_log_err(cx);