feat: add custom font sizes to fields (#1376)

Adds custom font sizes to fields

https://github.com/user-attachments/assets/1473a4d7-8dc6-4ead-acf5-dd78be7782a0

packages/lib/advanced-fields-validation/validate-dropdown.ts

@@ -1,14 +1,10 @@
-interface DropdownFieldMeta {
-  readOnly?: boolean;
-  required?: boolean;
-  values?: { value: string }[];
-  defaultValue?: string;
-}
+import type { TDropdownFieldMeta as DropdownFieldMeta } from '../types/field-meta';
 
 export const validateDropdownField = (
   value: string | undefined,
   fieldMeta: DropdownFieldMeta,
   isSigningPage: boolean = false,
+  fontSize?: number,
 ): string[] => {
   const errors = [];
 
@@ -50,5 +46,9 @@ export const validateDropdownField = (
     errors.push('Duplicate values are not allowed');
   }
 
+  if (fontSize && (fontSize < 8 || fontSize > 96)) {
+    errors.push('Font size must be between 8 and 96.');
+  }
+
   return errors;
 };