Migrate views to Odoo 17/18 syntax; fix pre-existing XML blockers

- Convert all 124 attrs="{...}" across 13 view files to direct Odoo 17/18
  attributes (invisible/readonly/required with Python expressions); prefix-domain
  OR/AND/NOT and operators handled (e.g. "(is_overdue or days_until_due > 7) and completed")
- Fix pre-existing XML errors that blocked module load on any version:
  - Replace invalid   HTML entity with   in 4 files (reports + portal)
  - Merge duplicate style= attributes (3 spots in website_intake_templates)
  - Replace 3 illegal <t t-if> embedded in class="" attributes with t-attf-class
- All 44 module XML files now parse clean

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

activeblue_familylaw/views/fl_support_views.xml

@@ -87,11 +87,11 @@
                         <group>
                             <field name="deviation_requested"/>
                             <field name="deviation_reason"
-                                   attrs="{'invisible': [('deviation_requested', '=', False)]}"/>
+                                   invisible="not deviation_requested"/>
                             <field name="deviation_amount"
-                                   attrs="{'invisible': [('deviation_requested', '=', False)]}"/>
+                                   invisible="not deviation_requested"/>
                             <field name="final_amount_with_deviation" readonly="1"
-                                   attrs="{'invisible': [('deviation_requested', '=', False)]}"/>
+                                   invisible="not deviation_requested"/>
                         </group>
 
                         <separator string="Summary"/>