Update install failures become visible: blocked, aborted, failed (D-155)

The PackageInstaller session's final status now reaches UpdateRepository:
InstallResultReceiver hands it by session id to the waiting AndroidApkInstaller
call (ApkInstaller.install returns a PendingInstall). installOutcome() maps
STATUS_FAILURE_BLOCKED to UpdateFailure.Blocked, STATUS_FAILURE_ABORTED back to
Available without an error, and every other failure to UpdateFailure.Install
with the installer's EXTRA_STATUS_MESSAGE. The cached APK is deleted once the
installer answers, so "Try again" downloads again. UpdateBanner's Failed variant
shows the reason on S-4 and S-22; two core:design strings (en/sv) with their
docs/ux/strings.csv rows. Unit tests for the mapping, the repository outcomes
and the receiver; goldens: update_banner re-recorded, S-17-install-blocked,
S-17-install-failed and s22_about_install_blocked new.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01TQd3pEP9UeN2uifbHknQ7B

docs/ux/strings.csv

@@ -220,6 +220,8 @@ update_later,Later,Senare,module=core:design
 update_downloading,Downloading… %1$d %%,Laddar ner… %1$d %%,module=core:design
 update_downloading_spoken,Downloading version %1$s,Laddar ner version %1$s,module=core:design; TalkBack of the progress bar
 update_failed,"Download failed, try again",Nedladdningen misslyckades. Försök igen.,module=core:design; AC-16.4
+update_install_failed,Could not install the update,Kunde inte installera uppdateringen,module=core:design; D-155 banner title after an install failure
+update_install_blocked,The phone's security settings blocked the installation (Auto Blocker or Install unknown apps). Change the setting and try again.,Installationen blockerades av telefonens säkerhetsinställningar (Auto Blocker eller Installera okända appar). Ändra inställningen och försök igen.,module=core:design; D-155 STATUS_FAILURE_BLOCKED body
 update_permission_title,Allow installation,Tillåt installation,module=core:design
 update_permission_body,"Kvitt updates straight from your own server, not from the Play Store, so Android asks once whether Kvitt may Install unknown apps. Turn on Allow from this source and come back to Kvitt. The update continues by itself.","Kvitt uppdateras direkt från er server, inte från Play Butik. Därför frågar Android en gång om Kvitt får Installera okända appar. Slå på Tillåt från den här källan och gå sedan tillbaka till Kvitt. Uppdateringen fortsätter av sig själv.",module=core:design; AC-16.3; bold the two Android setting names with <annotation>; Android's own labels per locale
 error_household_full,Your partner has already joined,Din partner har redan gått med,module=core:design; household_full