Provide own default error page in Fresh

pragma cannot be set when runtime is automatic at https://deno.land/x/fresh@1.0.1/src/server/default_error_page.tsx:1:1

{
  "imports": {
    "$fresh/": "https://deno.land/x/fresh@1.1.4/",
    "kysely": "https://esm.sh/kysely@0.24.2",
    "kysely-deno-postgres": "https://deno.land/x/kysely_deno_postgres@v0.4.0/mod.ts",
    "preact": "https://esm.sh/preact@10.11.0",
    "preact/": "https://esm.sh/preact@10.11.0/",
    "preact-render-to-string": "https://esm.sh/preact-render-to-string@5.2.4",
    "@preact/signals": "https://esm.sh/*@preact/signals@1.0.3",
    "@preact/signals-core": "https://esm.sh/*@preact/signals-core@1.0.1",
    "fresh_session": "https://deno.land/x/fresh_session@0.2.0/mod.ts",
    "redis": "https://deno.land/x/redis@v0.29.2/mod.ts"
  }
}