[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

---------

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

src/components/PolicyUpdateOverlay/usePreemptivelyCompleteActivePolicyUpdate.ts

@@ -0,0 +1,21 @@
+import {useCallback} from 'react'
+
+import {ACTIVE_UPDATE_ID} from '#/components/PolicyUpdateOverlay/config'
+import {logger} from '#/components/PolicyUpdateOverlay/logger'
+import {device, useStorage} from '#/storage'
+
+/*
+ * Marks the active policy update as completed in device storage.
+ * `usePolicyUpdateState` will react to this and replicate this status in the
+ * server NUX state for this account.
+ */
+export function usePreemptivelyCompleteActivePolicyUpdate() {
+  const [_completedForDevice, setCompletedForDevice] = useStorage(device, [
+    ACTIVE_UPDATE_ID,
+  ])
+
+  return useCallback(() => {
+    logger.debug(`preemptively completing active policy update`)
+    setCompletedForDevice(true)
+  }, [setCompletedForDevice])
+}