* added "isExternal" to the getLibraryAssetPaths query
* handleQueueAssetRefresh skip "non external" video asset, closes#8562
* correctly implements live photo deletion for external library
* use "external asset" for external library tests
* minor: external library asset checksum is "path hash" not file hash
* renamed to getExternalLibraryAssetPaths and added isExternal where clause
* generated sql
* reverted leftover change