fix: replaced instances of batch to batch_old

lms/www/batch/join.py

@@ -4,8 +4,8 @@ import frappe
 def get_context(context):
 	context.no_cache = 1
 	batch_name = frappe.form_dict["batch"]
-	context.batch = frappe.get_doc("LMS Batch Old", batch_name)
-	context.already_a_member = context.batch.is_member(frappe.session.user)
-	context.batch.course_title = frappe.db.get_value(
-		"LMS Course", context.batch.course, "title"
+	context.batch_old = frappe.get_doc("LMS Batch Old", batch_name)
+	context.already_a_member = context.batch_old.is_member(frappe.session.user)
+	context.batch_old.course_title = frappe.db.get_value(
+		"LMS Course", context.batch_old.course, "title"
 	)

lms/www/batch/learn.py

@@ -72,7 +72,7 @@ def get_context(context):
 	context.page_extensions = get_page_extensions(context)
 	context.page_context = {
 		"course": context.course.name,
-		"batch": context.batch,
+		"batch": context.batch_old,
 		"lesson": context.lesson.name if context.lesson.name else "New Lesson",
 		"is_member": context.membership is not None,
 	}