Fix remote worktree picker hides "Create from origin/main" option (#59134)

This passes the `include_remote_name` flag through the remote
`GetDefaultBranch` RPC instead of dropping it at the client/host
boundary. That lets remote repositories resolve default branches as
`origin/main` when needed, so worktree creation uses a valid remote
branch name instead of falling back to `main`.

Self-Review Checklist:

- [x] I've reviewed my own diff for quality, security, and reliability
- [x] Unsafe blocks (if any) have justifying comments
- [x] The content adheres to Zed's UI standards
([UX/UI](https://github.com/zed-industries/zed/blob/main/CONTRIBUTING.md#uiux-checklist)
and
[icon](https://github.com/zed-industries/zed/blob/main/crates/icons/README.md)
guidelines)
- [ ] Tests cover the new/changed behavior
- [x] Performance impact has been considered and is acceptable

Closes #59121

Release Notes:

- Fixed remote worktree creation from the default branch when the
default branch requires its remote name.

---------

Co-authored-by: Smit Barmase <heysmitbarmase@gmail.com>

Author: rtbenfield

crates/collab/tests/integration/integration_tests.rs

@@ -7310,6 +7310,20 @@ async fn test_remote_git_branches(
     });
 
     assert_eq!(host_branch.name(), "totally-new-branch");
+
+    let default_branch_b = cx_b
+        .update(|cx| repo_b.update(cx, |repository, _cx| repository.default_branch(false)))
+        .await
+        .unwrap()
+        .unwrap();
+    assert_eq!(default_branch_b.as_deref(), Some("main"));
+
+    let default_branch_with_remote_b = cx_b
+        .update(|cx| repo_b.update(cx, |repository, _cx| repository.default_branch(true)))
+        .await
+        .unwrap()
+        .unwrap();
+    assert_eq!(default_branch_with_remote_b.as_deref(), Some("origin/main"));
 }
 
 #[gpui::test]

crates/project/src/git_store.rs

@@ -3540,7 +3540,7 @@ impl GitStore {
 
         let branch = repository_handle
             .update(&mut cx, |repository_handle, _| {
-                repository_handle.default_branch(false)
+                repository_handle.default_branch(envelope.payload.include_remote_name)
             })
             .await??
             .map(Into::into);
@@ -8349,6 +8349,7 @@ impl Repository {
                         .request(proto::GetDefaultBranch {
                             project_id: project_id.0,
                             repository_id: id.to_proto(),
+                            include_remote_name,
                         })
                         .await?;
 

crates/proto/proto/git.proto

@@ -512,6 +512,7 @@ message BlameBufferResponse {
 message GetDefaultBranch {
   uint64 project_id = 1;
   uint64 repository_id = 2;
+  bool include_remote_name = 3;
 }
 
 message GetDefaultBranchResponse {

crates/remote_server/src/remote_editing_tests.rs

@@ -2800,6 +2800,20 @@ async fn test_remote_git_branches(cx: &mut TestAppContext, server_cx: &mut TestA
     });
 
     assert_eq!(server_branch.name(), "totally-new-branch");
+
+    let default_branch = cx
+        .update(|cx| repository.update(cx, |repository, _cx| repository.default_branch(false)))
+        .await
+        .unwrap()
+        .unwrap();
+    assert_eq!(default_branch.as_deref(), Some("main"));
+
+    let default_branch_with_remote = cx
+        .update(|cx| repository.update(cx, |repository, _cx| repository.default_branch(true)))
+        .await
+        .unwrap()
+        .unwrap();
+    assert_eq!(default_branch_with_remote.as_deref(), Some("origin/main"));
 }
 
 #[gpui::test]