feat(fusion_planning): hide Role field from Add Shift dialog

Role is still auto-pulled from the employee's Default Role on the
employee profile (planning.slot._compute_role_id reads
resource_id.default_role_id). Hiding the manual Role field declutters
the Add Shift dialog so the manager doesn't have to think about it on
each shift.

If a shift needs a one-off role override, an admin can still set it
via the backend list view or by editing the resource's default role.

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

fusion_planning/__manifest__.py

@@ -5,7 +5,7 @@
 
 {
     'name': 'Fusion Planning',
-    'version': '19.0.1.1.0',
+    'version': '19.0.1.1.1',
     'category': 'Human Resources/Planning',
     'summary': 'Fusion Clock bridge to Odoo Planning - employee schedule on the portal',
     'description': """