Fix can't find default theme bundle for some specific languages.

It's because the translation of R.string.default_theme_title in some language is different with the title of the default theme bundle.
Change the logic of finding default theme bundle to get rid of string comparison.

Bug: 176087825
Change-Id: I471a711ad51515c8b4586b4e8a9b1e8e88b5b7d4
1 file changed