Mm 50735 (#22626)

* add shipping address to self hosted signup model
* purchase modals allow scroll
* fix z-index issues with payment modal dropdowns

webapp/platform/types/src/hosted_customer.ts

@@ -18,6 +18,7 @@ export interface SelfHostedSignupForm {
     first_name: string;
     last_name: string;
     billing_address: Address;
+    shipping_address: Address;
     organization: string;
 }