feat(server): refresh face detection (#12335)

* refresh faces

handle non-ml faces

* fix metadata face handling

* updated tests

* added todo comment

server/src/dtos/job.dto.ts

@@ -18,7 +18,7 @@ export class JobCommandDto {
   command!: JobCommand;
 
   @ValidateBoolean({ optional: true })
-  force!: boolean;
+  force?: boolean; // TODO: this uses undefined as a third state, which should be refactored to be more explicit
 }
 
 export class JobCreateDto {