[功能请求]: Emby 订阅缺集检查未遵循“同步媒体库”选项，云端同名媒体导致误判不缺集

It is recommended that the movie and TV show existence query be consistent with self._sync_libraries, and the following suggestions can be considered: 1. In non-all mode, use ParentId to query each selected media library; or 2. When querying, obtain Path and ParentId/parent information and filter out results that do not belong to the selected library; 3. For TV show Item IDs that are externally transmitted or cached, also check their media library affiliation; if they do not belong to the selected library, discard them and re-search in the selected library; 4. The movie query should follow the same filtering logic; 5. Add the following regression tests: In the same Emby, there are two media items with the same name, year, and TMDB ID in both the local library and the cloud library.