refactor: Simplify dequeue_strategy selection

Classes arent required anymore, it can just be a parm to worker class
isntead.

frappe/utils/background_jobs.py

@@ -4,7 +4,7 @@ import socket
 import time
 from collections import defaultdict
 from functools import lru_cache
-from typing import Any, Callable, Literal, NoReturn
+from typing import Any, Callable, NoReturn
 from uuid import uuid4
 
 import redis
@@ -13,7 +13,7 @@ from rq import Queue, Worker
 from rq.exceptions import NoSuchJobError
 from rq.job import Job, JobStatus
 from rq.logutils import setup_loghandlers
-from rq.worker import RandomWorker, RoundRobinWorker
+from rq.worker import DequeueStrategy
 from tenacity import retry, retry_if_exception_type, stop_after_attempt, wait_fixed
 
 import frappe
@@ -230,10 +230,12 @@ def start_worker(
 	rq_username: str | None = None,
 	rq_password: str | None = None,
 	burst: bool = False,
-	strategy: Literal["round_robin", "random"] | None = None,
+	strategy: DequeueStrategy | None = DequeueStrategy.DEFAULT,
 ) -> NoReturn | None:  # pragma: no cover
 	"""Wrapper to start rq worker. Connects to redis and monitors these queues."""
-	DEQUEUE_STRATEGIES = {"round_robin": RoundRobinWorker, "random": RandomWorker}
+
+	if not strategy:
+		strategy = DequeueStrategy.DEFAULT
 
 	if frappe._tune_gc:
 		gc.collect()
@@ -251,17 +253,17 @@ def start_worker(
 	if os.environ.get("CI"):
 		setup_loghandlers("ERROR")
 
-	WorkerKlass = DEQUEUE_STRATEGIES.get(strategy, Worker)
-
 	logging_level = "INFO"
 	if quiet:
 		logging_level = "WARNING"
-	worker = WorkerKlass(queues, name=get_worker_name(queue_name), connection=redis_connection)
+
+	worker = Worker(queues, name=get_worker_name(queue_name), connection=redis_connection)
 	worker.work(
 		logging_level=logging_level,
 		burst=burst,
 		date_format="%Y-%m-%d %H:%M:%S",
 		log_format="%(asctime)s,%(msecs)03d %(message)s",
+		dequeue_strategy=strategy,
 	)