refactor(treewide): formatting and ruff fixes, + manually enabled F401

Signed-off-by: Akhil Narang <me@akhilnarang.dev>
diff --git a/erpnext/utilities/transaction_base.py b/erpnext/utilities/transaction_base.py
index b083614..d89095e 100644
--- a/erpnext/utilities/transaction_base.py
+++ b/erpnext/utilities/transaction_base.py
@@ -58,9 +58,7 @@
 
 	def compare_values(self, ref_doc, fields, doc=None):
 		for reference_doctype, ref_dn_list in ref_doc.items():
-			prev_doc_detail_map = self.get_prev_doc_reference_details(
-				ref_dn_list, reference_doctype, fields
-			)
+			prev_doc_detail_map = self.get_prev_doc_reference_details(ref_dn_list, reference_doctype, fields)
 			for reference_name in ref_dn_list:
 				prevdoc_values = prev_doc_detail_map.get(reference_name)
 				if not prevdoc_values: