fix(core): TRAC-275 align formField.required with field.required for checkbox-group (#3005)

* fix(core): align formField.required with field.required for checkbox-group

* chore: fix prettier formatting

* refactor: use if/else for checkbox-group schema per review

Author: mfaris9

.changeset/fix-checkbox-group-required.md

@@ -0,0 +1,6 @@
+---
+"@bigcommerce/catalyst-core": patch
+---
+
+Fix `formField.required` mismatch for `checkbox-group` fields in `DynamicForm`. The schema branch was missing `.optional()` for non-required checkbox groups.
+

core/vibes/soul/form/dynamic-form/schema.ts

@@ -302,7 +302,11 @@ function getFieldSchema(
     case 'checkbox-group':
       fieldSchema = z.string().array();
 
-      if (field.required === true) fieldSchema = fieldSchema.nonempty();
+      if (field.required === true) {
+        fieldSchema = fieldSchema.nonempty();
+      } else {
+        fieldSchema = fieldSchema.optional();
+      }
 
       break;