[FIX] l10n_it_intrastat_statement: sequence lines

Recompute sequence lines after possible removal of lines for adjustments.

l10n_it_intrastat_statement/models/intrastat_statement.py

@@ -820,6 +820,7 @@ def compute_statement(self):
                     )
                     to_refund_model = self.env[refund_section_model]
                     self.refund_line(line, to_refund_model)
+        self.recompute_sequence_lines()
         return True
 
     @staticmethod