fix(reports): WO Margin PDF — t-field requires dot-notation on Odoo 19

The template used 't-field="step['rate']"' for monetary values pulled
from dict rows. Odoo 19's QWeb asserts t-field has at least one dot
(it's strictly for record.field_name lookups). Replaced six bare-dict
t-field usages with t-esc; the existing t-options widget=monetary +
display_currency still applies for currency formatting.

Verified by rendering report for WO-30019 — 1229-byte valid PDF, no
QWeb error.

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

fusion_plating/fusion_plating_jobs/__manifest__.py

@@ -3,7 +3,7 @@
 # License OPL-1 (Odoo Proprietary License v1.0)
 {
     'name': 'Fusion Plating — Native Jobs',
-    'version': '19.0.8.22.8',
+    'version': '19.0.8.22.9',
     'category': 'Manufacturing/Plating',
     'summary': 'Native plating job model — replaces mrp.production / mrp.workorder bridge.',
     'author': 'Nexa Systems Inc.',