Fix issues with non-UTF8 filenames by always fixing the encoding of tree and blob paths

changelogs/unreleased/dm-encode-tree-and-blob-paths.yml

+---
+title: Fix issues with non-UTF8 filenames by always fixing the encoding of tree and
+  blob paths
+merge_request:
+author:

lib/gitlab/git/blob.rb

@@ -175,6 +175,10 @@ module Gitlab
         encode! @name
       end
 
+      def path
+        encode! @path
+      end
+
       def truncated?
         size && (size > loaded_size)
       end

lib/gitlab/git/tree.rb

@@ -80,6 +80,10 @@ module Gitlab
         encode! @name
       end
 
+      def path
+        encode! @path
+      end
+
       def dir?
         type == :tree
       end