fix: professional profile not loading or saving correctly

- Fix typo aditional_address -> additional_address in toDocument() and fromDocument()
- Clear ProfessionalFormProvider before fetch in initState() so TextFormField initialValue always applies to fresh data
- Add clear() to ProfessionalFormProvider; call it on logout to avoid leaking data between users

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

lib/providers/auth_provider.dart

@@ -1,6 +1,7 @@
 import 'package:flutter/material.dart';
 import 'package:flutter/scheduler.dart';
 import 'package:prosapp_web_app/models/usuario.dart';
+import 'package:prosapp_web_app/providers/professional_form_provider.dart';
 import 'package:prosapp_web_app/providers/professional_provider.dart';
 import 'package:prosapp_web_app/providers/services_provider.dart';
 import 'package:prosapp_web_app/router/router.dart';
@@ -205,6 +206,7 @@ class AuthProvider extends ChangeNotifier {
     final ctx = NavigationService.navigatorKey.currentContext!;
     Provider.of<ServicesProvider>(ctx, listen: false).logout();
     Provider.of<ProfessionalProvider>(ctx, listen: false).logout();
+    Provider.of<ProfessionalFormProvider>(ctx, listen: false).clear();
 
     NavigationService.replaceTo(Flurorouter.phoneLoginRoute);
   }

lib/providers/professional_form_provider.dart

@@ -60,6 +60,11 @@ class ProfessionalFormProvider with ChangeNotifier {
   bool _validForm() => formKey.currentState!.validate();
   bool _validProfileForm() => profileFormKey.currentState!.validate();
 
+  void clear() {
+    profesional = null;
+    notifyListeners();
+  }
+
   setProfesional(Profesional p) {
     profesional = p;
     notifyListeners();