fix(cat-voices): label (#2758)

Author: dt-iohk

catalyst_voices/packages/internal/catalyst_voices_localization/lib/l10n/intl_en.arb

@@ -1387,6 +1387,15 @@
       }
     }
   },
+  "errorValidationStringLengthOutOfExactRange": "The text should be {count} {count, plural, =0{characters} =1{character} other{characters}}.",
+  "@errorValidationStringLengthOutOfExactRange": {
+    "description": "Validation error when the user entered text is not matching the exact required length.",
+    "placeholders": {
+      "count": {
+        "type": "int"
+      }
+    }
+  },
   "errorValidationListItemsBelowMin": "There should be at least {min} {min, plural, =0{items} =1{item} other{items}}.",
   "@errorValidationListItemsBelowMin": {
     "description": "Validation error when the user entered less than min items in the list.",

catalyst_voices/packages/internal/catalyst_voices_view_models/lib/src/document/validation/localized_document_validation_result.dart

@@ -129,7 +129,9 @@ final class LocalizedDocumentStringOutOfRange extends LocalizedDocumentValidatio
     final max = range.max;
 
     if (min != null && max != null) {
-      return context.l10n.errorValidationStringLengthOutOfRange(min, max);
+      return min == max
+          ? context.l10n.errorValidationStringLengthOutOfExactRange(min)
+          : context.l10n.errorValidationStringLengthOutOfRange(min, max);
     } else if (min != null) {
       return context.l10n.errorValidationStringLengthBelowMin(min);
     } else if (max != null) {