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/src/repositories/asset.repository.ts

@@ -160,10 +160,10 @@ export class AssetRepository implements IAssetRepository {
   }
 
   @GenerateSql({ params: [{ take: 1, skip: 0 }, DummyValue.UUID] })
-  getLibraryAssetPaths(pagination: PaginationOptions, libraryId: string): Paginated<AssetPathEntity> {
+  getExternalLibraryAssetPaths(pagination: PaginationOptions, libraryId: string): Paginated<AssetPathEntity> {
     return paginate(this.repository, pagination, {
       select: { id: true, originalPath: true, isOffline: true },
-      where: { library: { id: libraryId } },
+      where: { library: { id: libraryId }, isExternal: true },
     });
   }