[APP-1356] Policy update dialog (#8782)

* Add blocking announcement dialog feature

* WIP custom dialog

* Rework dialog and add native FocusScope

* Lock scroll on web, fix backdrop

* Add web FocusScope

* Create custom Outlet for these announcements

* Clean up FocusScope native impl

* Comments

* Some styling fixes

* Handle screen reader specifically

* Clean up state, remove Portal edits

* Reorg, rename

* Add syncing, tests

* Revert dialog updates

* Revert formatting

* Delete unused file

* Format

* Add FullWindowOverlay

* remove mmkv storage in debug btn

* Add debug code

* fix taps passing through on iOS

* Reorg

* Reorg, rename everything

* Complete policy update after signup

* Add logger

* Move context around, unmount portals on native

* Move a11y prop into FocusScope

* Remove useMemo

* Update dates

* Move debug to dev settings

* Unmount web portals until policy update completed

* UPdate dates

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Co-authored-by: Samuel Newman <mozzius@protonmail.com>

src/logger/types.ts

@@ -13,6 +13,7 @@ export enum LogContext {
   FeedFeedback = 'feed-feedback',
   PostSource = 'post-source',
   AgeAssurance = 'age-assurance',
+  PolicyUpdate = 'policy-update',
 
   /**
    * METRIC IS FOR INTERNAL USE ONLY, don't create any other loggers using this