fix(server): external library motion photo video asset handling (#8721)

* 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

server/test/repositories/asset.repository.mock.ts

@@ -20,7 +20,7 @@ export const newAssetRepositoryMock = (): jest.Mocked<IAssetRepository> => {
     getAll: jest.fn().mockResolvedValue({ items: [], hasNextPage: false }),
     getAllByDeviceId: jest.fn(),
     updateAll: jest.fn(),
-    getLibraryAssetPaths: jest.fn(),
+    getExternalLibraryAssetPaths: jest.fn(),
     getByLibraryIdAndOriginalPath: jest.fn(),
     deleteAll: jest.fn(),
     update: jest.fn(),