`/health` endpoint return 200 status even if the call fails

[baszoetekouw]

For example:

> curl -v http://172.18.0.15:80/health
*   Trying 172.18.0.15:80...
* Connected to 172.18.0.15 (172.18.0.15) port 80 (#0)
> GET /health HTTP/1.1
> Host: 172.18.0.15
> User-Agent: curl/7.88.1
> Accept: */*
>
< HTTP/1.1 200 OK
< Date: Thu, 12 Mar 2026 11:34:31 GMT
< Server: Apache
< X-Content-Type-Options: nosniff
< Vary: Accept-Encoding
< Content-Length: 251
< Content-Type: text/html; charset=UTF-8
<
<br />
<b>Fatal error</b>:  Uncaught RuntimeException: APP_SECRET must be at least 32 characters long in production. in /var/www/html/public/index.php:17
Stack trace:
#0 {main}
  thrown in <b>/var/www/html/public/index.php</b> on line <b>17</b><br />
* Connection #0 to host 172.18.0.15 left intact

Instead, return http status 500 on error.