feat: implement fiscal ID validation; replace fiscal code validator and update related components

src/app/core/services/form-errors.service.ts

@@ -68,6 +68,11 @@ export class FormErrorsService {
       const info = errors['invalidUsername'];
       out.push({ key: 'invalidUsername', message: info.message ?? `${label} معتبر نیست.` });
     }
+
+    if (errors['invalidFiscalId']) {
+      const info = errors['invalidFiscalId'];
+      out.push({ key: 'invalidFiscalId', message: info.message ?? `${label} معتبر نیست.` });
+    }
     // fallback: include any other error keys
     Object.keys(errors).forEach((k) => {
       if (
@@ -80,6 +85,7 @@ export class FormErrorsService {
           'max',
           'email',
           'pattern',
+          'invalidFiscalId',
         ].indexOf(k) === -1
       ) {
         try {