fix(web): fix create file tree error when folder named constructor.

[pavlelee]

Issue Number / Link: No

Summary of the issue:

If a directory in a project is called constructor, Commit Detail View always show loading.

Description outlining how this pull request resolves the issue:

normal directory:

wrong directory:

because constructor and JS constructor have the same name:

After modification:

[maxisam]

probably should use !Object.prototype.hasOwnProperty.call(cur.contents, path[j])