[APP-1674] Add bday fallback for app passwords (#9513)

* Add bday fallback for app passwords

* Update birthdate copy, add isAppPassword handling on NoAccessScreen

* Update copy

* Update usage

* Bump API package

* HmmMMMmmm

Co-authored-by: surfdude29 <149612116+surfdude29@users.noreply.github.com>

* s/a/your

Co-authored-by: surfdude29 <149612116+surfdude29@users.noreply.github.com>

* Say hello

---------

Co-authored-by: surfdude29 <149612116+surfdude29@users.noreply.github.com>

src/ageAssurance/data.tsx

@@ -22,7 +22,10 @@ import {
 import {useAgent, useSession} from '#/state/session'
 import * as debug from '#/ageAssurance/debug'
 import {logger} from '#/ageAssurance/logger'
-import {isLegacyBirthdateBug} from '#/ageAssurance/util'
+import {
+  getBirthdateStringFromAge,
+  isLegacyBirthdateBug,
+} from '#/ageAssurance/util'
 import {IS_DEV} from '#/env'
 import {device} from '#/storage'
 
@@ -324,6 +327,22 @@ export async function getOtherRequiredData({
   const data: OtherRequiredData = {
     birthdate: prefs.birthDate ? prefs.birthDate.toISOString() : undefined,
   }
+
+  /**
+   * If we can't read a birthdate, it may be due to the user accessing the
+   * account via an app password. In that case, fall-back to declared age
+   * flags.
+   */
+  if (!data.birthdate) {
+    if (prefs.declaredAge?.isOverAge18) {
+      data.birthdate = getBirthdateStringFromAge(18)
+    } else if (prefs.declaredAge?.isOverAge16) {
+      data.birthdate = getBirthdateStringFromAge(16)
+    } else if (prefs.declaredAge?.isOverAge13) {
+      data.birthdate = getBirthdateStringFromAge(13)
+    }
+  }
+
   const did = getDidFromAgentSession(agent)
   if (data && did && birthdateCache.has(did)) {
     /*