[REF] all: pass pre-commit on the whole repo

Needed for the lint job of the CI to go green. Mostly automatic hook
fixes (black, isort, prettier, pyupgrade, autoflake, whitespace). By hand:

- flake8: two unused imports, an ambiguous variable name `l`.
- pylint-odoo mandatory: manifest keys equal to their default value
  (installable, application, data, external_dependencies).
- end-of-file-fixer skips *.patch too, like trailing-whitespace: the
  upstream patches stay as git format-patch wrote them.

No behaviour change.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

membership_payment_date/models/account_move.py

@@ -4,7 +4,8 @@
 import math
 from datetime import timedelta
 
-from odoo import fields, models
+from odoo import fields
+from odoo import models
 
 
 class AccountMove(models.Model):
@@ -74,7 +75,11 @@ class AccountMove(models.Model):
         return fields.Date.today()
 
     def _compute_membership_dates(
-        self, partner, product, payment_date, quantity=1.0,
+        self,
+        partner,
+        product,
+        payment_date,
+        quantity=1.0,
         exclude_line_ids=None,
     ):
         """Calculate date_from and date_to for a membership line.