chore(env): update application version to 2.2.8 in production environment

feat(marketing): enhance step components with validity reporting

- Added onValidityChange prop to multiple step components (BenefitsStep, ChallengesStep, ChartStep, ContactsStep, FeaturesStep, FooterStep, HeroStep) to handle form validity.
- Updated respective presenter hooks to utilize the new onValidityChange functionality for real-time validity reporting.
- Enhanced MarketingForm to manage step validity and disable the next button based on current step validity.

src/app/marketing/_components/ChallengesStep.tsx

@@ -7,10 +7,11 @@ import useChallengesStepPresenter, {
 
 interface ChallengesStepProps {
   initialData?: IChallengesStepFields;
+  onValidityChange?: (valid: boolean) => void;
 }
 
 const ChallengesStep = forwardRef<unknown, ChallengesStepProps>(
-  ({ initialData }, ref) => {
+  ({ initialData, onValidityChange }, ref) => {
     const {
       errors,
       handleSubmit,
@@ -20,7 +21,7 @@ const ChallengesStep = forwardRef<unknown, ChallengesStepProps>(
       append,
       remove,
       control,
-    } = useChallengesStepPresenter(initialData, ref);
+    } = useChallengesStepPresenter(initialData, ref, onValidityChange);
 
     return (
       <SectionStep<IChallengesStepFields>