Fix symlink icon in project tree

changelogs/unreleased/22303-symbolic-in-tree.yml

+---
+title: Fix symlink icon in project tree
+merge_request: 9780
+author: mhasbini

lib/api/entities.rb

@@ -204,7 +204,7 @@ module API
       expose :id, :name, :type, :path
 
       expose :mode do |obj, options|
-        filemode = obj.mode.to_s(8)
+        filemode = obj.mode
         filemode = "0" + filemode if filemode.length < 6
         filemode
       end

lib/gitlab/git/tree.rb

@@ -33,7 +33,7 @@ module Gitlab
               root_id: root_tree.oid,
               name: entry[:name],
               type: entry[:type],
-              mode: entry[:filemode],
+              mode: entry[:filemode].to_s(8),
               path: path ? File.join(path, entry[:name]) : entry[:name],
               commit_id: sha,
             )

spec/lib/gitlab/git/tree_spec.rb

@@ -19,6 +19,7 @@ describe Gitlab::Git::Tree, seed_helper: true do
       it { expect(dir.commit_id).to eq(SeedRepo::Commit::ID) }
       it { expect(dir.name).to eq('encoding') }
       it { expect(dir.path).to eq('encoding') }
+      it { expect(dir.mode).to eq('40000') }
 
       context :subdir do
         let(:subdir) { Gitlab::Git::Tree.where(repository, SeedRepo::Commit::ID, 'files').first }