[PM-22179] Redirect user to /setup-extension (#15375)

* add end user feature flag

* add initial setup extension component and route

* redirect users from registration completion to the setup extension page

* add `hideIcon` to anon layout for web
- matches implementation on the browser.

* integrate with anon layout for extension wrapper

* add initial loading state

* conditionally redirect the user upon initialization

* redirect the user to the vault if the extension is installed

* add initial copy for setup-extension page

* add confirmation dialog for skipping the extension installation

* add success state for setup extension page

* only show loggedin toast when end user activation is not enabled.

* add image alt

* lower threshold for polling extension

* close the dialog when linking to the vault

* update party colors

* use the platform specific registration service to to only forward the web registrations to `/setup-extension`

* call `super` rather than `/vault` directly, it could change in the future

libs/common/src/enums/feature-flag.enum.ts

@@ -55,6 +55,7 @@ export enum FeatureFlag {
   PM18520_UpdateDesktopCipherForm = "pm-18520-desktop-cipher-forms",
   EndUserNotifications = "pm-10609-end-user-notifications",
   RemoveCardItemTypePolicy = "pm-16442-remove-card-item-type-policy",
+  PM19315EndUserActivationMvp = "pm-19315-end-user-activation-mvp",
 
   /* Platform */
   IpcChannelFramework = "ipc-channel-framework",
@@ -99,6 +100,7 @@ export const DefaultFeatureFlagValue = {
   [FeatureFlag.EndUserNotifications]: FALSE,
   [FeatureFlag.PM19941MigrateCipherDomainToSdk]: FALSE,
   [FeatureFlag.RemoveCardItemTypePolicy]: FALSE,
+  [FeatureFlag.PM19315EndUserActivationMvp]: FALSE,
 
   /* Auth */
   [FeatureFlag.PM16117_SetInitialPasswordRefactor]: FALSE,