refactor: streamline emergency contact management by removing unused extensions and optimizing BLoC initialization

apps/mobile/packages/domain/lib/src/entities/profile/emergency_contact.dart

@@ -56,7 +56,7 @@ class EmergencyContact extends Equatable {
   /// Converts a string value to a [RelationshipType].
   static RelationshipType stringToRelationshipType(String? value) {
     if (value != null) {
-      final strVal = value.toUpperCase();
+      final String strVal = value.toUpperCase();
       switch (strVal) {
         case 'FAMILY':
           return RelationshipType.family;