Merged in fix/BOOK-121-join-membership-modify-correct-price (pull request #2829)

fix(BOOK-121): clear join only if membership number is valid and calculate correct member price

* fix(BOOK-121): clear join only if membership number is valid and calculate correct member price


Approved-by: Erik Tiekstra
Approved-by: Matilda Landström

packages/booking-flow/lib/components/EnterDetails/Details/MemberPriceModal/index.tsx

@@ -39,7 +39,7 @@ export default function MemberPriceModal() {
     trigger("membershipNo").then((isValid) => {
       const { isDirty } = getFieldState("membershipNo")
       updatePriceForMembershipNo(membershipNo, isValid)
-      if (isValid && isDirty) {
+      if (isValid && isDirty && !!membershipNo) {
         setIsOpen(true)
       }
     })