fix: install_failure type mismatch — issue never reached GitHub

SetupActivity was sending type 'install-failure' (hyphen) but the PHP
version-guard bypass list only checked for 'install_failure' (underscore).
Result: if the kiosk was not on the latest released version the error was
silently discarded and no GitHub issue was created.

Fix:
- SetupActivity: change type to 'install_failure' (underscore, consistent
  with KioskActivity which already used the correct name)
- api/index.php: add 'install-failure' (hyphen) to the bypass list as
  defensive fallback so old APK builds already in the field are covered too

api/index.php

@@ -5691,7 +5691,7 @@ function reportError(): void {
     // Exception: install/update errors are ALWAYS reported regardless of version,
     // because a device that is failing to install the update is by definition on
     // an old version — suppressing the issue is the opposite of useful.
-    $installErrorTypes = ['install_download_failed', 'install_failure', 'install_packager_exception'];
+    $installErrorTypes = ['install_download_failed', 'install_failure', 'install-failure', 'install_packager_exception'];
     $bypassVersionGuard = in_array($type, $installErrorTypes, true)
         || ($context['version_guard_bypass'] ?? false);
     if (!$bypassVersionGuard && !_isLatestVersion($version)) {