fix: add database migration for enabledForLogin field

The E2E tests were failing because the migration for the new
enabledForLogin field on JellyfinServer was missing.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Author: mchestr

prisma/migrations/20251229000000_add_jellyfin_enabled_for_login/migration.sql

@@ -0,0 +1,2 @@
+-- AlterTable
+ALTER TABLE "JellyfinServer" ADD COLUMN "enabledForLogin" BOOLEAN NOT NULL DEFAULT true;