fix(notifications): Send dialog cancel no longer pre-sends + no duplicate PDF

Two user-reported bugs on S00056 (and visible on any SO/invoice):

Bug 1: Cancelling the Send dialog still sends the email.
  action_quotation_send is a button handler that returns a
  compose-dialog action synchronously. Our override was calling
  _dispatch('quote_sent', ...) AFTER super(), which immediately
  sends the email via template.send_mail() before the user ever
  sees the dialog. Clicking Cancel at that point only dismisses
  the already-sent email's compose window.

  Fix: removed the _dispatch call entirely from action_quotation_send.
  The Send button IS the manual-send path; Odoo's compose dialog
  (pre-populated with our FP: Quotation Sent template thanks to
  _find_mail_template) handles the send-or-cancel choice correctly.

  If an auto-quote-sent notification is ever wanted, it should be
  wired from a cron that scans SOs that just transitioned
  draft -> sent, not from the button handler. Noted in a code
  comment.

Bug 2: Two copies of the same PDF attached to every email.
  The mail.template records now carry report_template_ids (set by
  the post_init hook from the previous refactor) which Odoo uses to
  auto-attach PDFs on send_mail(). But the fp.notification.template
  records ALSO had attach_quotation / attach_sale_order / attach_invoice
  flags set, which cause _collect_attachments() to render the same
  PDF a second time and pass it in email_values.

  Fix: turned those three flags off in the XML data file. Other
  flags (attach_coc, attach_bol, attach_receipt, attach_thickness_report,
  attach_packing_list, attach_pod) stay on — those are genuinely
  different documents, not dupes.

  Because the records are noupdate="1", updated the post_init_hook
  to also backfill the flag changes onto existing DB rows so
  production instances get cleaned up on -u, not just fresh installs.

Smoke:
  attach_quotation=False attach_sale_order=False attach_invoice=False on all three records
  1 report per template (no dupes)
  action_quotation_send no longer contains _dispatch("quote_sent", ...)

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

fusion_plating/fusion_plating_notifications/models/sale_order.py

@@ -43,15 +43,18 @@ class SaleOrder(models.Model):
             )
         return fp_tpl or super()._find_mail_template()
 
-    def action_quotation_send(self):
-        """Fire the quote_sent trigger when a quotation is emailed."""
-        res = super().action_quotation_send()
-        Dispatch = self.env['fp.notification.template']
-        for order in self:
-            Dispatch._dispatch(
-                'quote_sent', order, order.partner_id, sale_order=order,
-            )
-        return res
+    # NOTE: we intentionally do NOT override action_quotation_send to
+    # fire the quote_sent trigger. action_quotation_send returns a
+    # compose-dialog action synchronously — if we dispatch here the
+    # email is already sent by the time the user sees the dialog and
+    # decides to Cancel.
+    #
+    # The Send button itself IS the manual-send path; Odoo's compose
+    # dialog (populated with our FP: Quotation Sent template via the
+    # _find_mail_template override) handles the send-or-cancel choice
+    # cleanly. If an auto-quote-sent notification is ever desired,
+    # wire it from a cron job that scans SOs that just transitioned
+    # from draft → sent, not from the button handler.
 
     def action_confirm(self):
         res = super().action_confirm()