MHV-67177 Creates feature flag for landing page updates (#20890)

Author: KolbyVA

config/features.yml

@@ -1066,6 +1066,10 @@ features:
     actor_type: user
     description: Enables/disables Medical Records new access policy eligibility check endpoint
     enable_in_development: true
+  mhv_medical_records_update_landing_page:
+    actor_type: user
+    description: Enables/disables Medical Records new landing page content
+    enable_in_development: true
   mhv_medications_to_va_gov_release:
     actor_type: user
     description: Enables/disables Medications on VA.gov (intial transition from MHV to VA.gov)