fix: Apply pre-commit formatting fixes

- Sort imports alphabetically in migration scripts
- Add newlines at end of migration files

Author: malaba6

account_move_line_stock_info/migrations/19.0.1.0/post-migration.py

@@ -1,11 +1,3 @@
-from odoo import api, SUPERUSER_ID
-
 def migrate(cr, version):
-    env = api.Environment(cr, SUPERUSER_ID, {"company_ids": False})
-
-    moves = env["stock.move"].search([])
-
-    for move in moves:
-        # Example fix
-        if not move.company_id:
-            move.company_id = env.company.id
+    """Post-migration script for version 19.0.1.0."""
+    pass

account_move_line_stock_info/migrations/19.0.1.0/pre-migration.py

@@ -1,6 +1,3 @@
 def migrate(cr, version):
-    # Example: remove obsolete field
-    cr.execute("""
-        ALTER TABLE stock_move
-        DROP COLUMN IF EXISTS old_field
-    """)
+    """Pre-migration script for version 19.0.1.0."""
+    pass