Fix views preview when pattern declared by ui_pattern_library in the front theme.#334

DuaelFr wants to merge 1 commit intonuvoleweb:8.x-1.xnuvoleweb/ui_patterns:8.x-1.xfrom

DuaelFr:f-views-previewDuaelFr/ui_patterns:f-views-previewCopy head branch name to clipboard