Fix branch list bug which displayed default branch twice (#28878)

Fix #28876

services/repository/branch.go

@@ -66,6 +66,7 @@ func LoadBranches(ctx context.Context, repo *repo_model.Repository, gitRepo *git
 			PageSize: pageSize,
 		},
 		Keyword:            keyword,
+		ExcludeBranchNames: []string{repo.DefaultBranch},
 	}
 
 	dbBranches, totalNumOfBranches, err := db.FindAndCount[git_model.Branch](ctx, branchOpts)
@@ -73,8 +74,6 @@ func LoadBranches(ctx context.Context, repo *repo_model.Repository, gitRepo *git
 		return nil, nil, 0, err
 	}
 
-	branchOpts.ExcludeBranchNames = []string{repo.DefaultBranch}
-
 	if err := git_model.BranchList(dbBranches).LoadDeletedBy(ctx); err != nil {
 		return nil, nil, 0, err
 	}