Refactor ls-tree and git path related problems (#35858)

Fix #35852, the root problem is that the "name" field is heavily abused
(since #6816, and no way to get a clear fix)

There are still a lot of legacy problems in old code.

Co-authored-by: Giteabot <teabot@gitea.io>

modules/git/repo_commit_gogit.go

@@ -107,7 +107,7 @@ func (repo *Repository) getCommit(id ObjectID) (*Commit, error) {
 	}
 
 	commit.Tree.ID = ParseGogitHash(tree.Hash)
-	commit.Tree.gogitTree = tree
+	commit.Tree.resolvedGogitTreeObject = tree
 
 	return commit, nil
 }