fix Content-Disposition for chrome in captive portal and network insight

src/opnsense/mvc/app/controllers/OPNsense/CaptivePortal/Api/ServiceController.php

@@ -105,12 +105,8 @@ class ServiceController extends ApiControllerBase
         $result = json_decode($response, true);
         if ($result != null) {
             $response = $result['payload'];
-            $this->response->setContentType('application/octet-stream', 'UTF-8');
-            $this->response->setHeader(
-                'Content-Disposition:',
-                "Attachment; filename=\"template_" . $templateFileId . ".zip\""
-            );
-            $this->response->setHeader('Content-Type:', 'application/zip');
+            $this->response->setRawHeader("Content-Type: application/octet-stream");
+            $this->response->setRawHeader("Content-Disposition: attachment; filename=template_".$templateFileId.".zip");
             return base64_decode($response);
         } else {
             // return empty response on error

src/opnsense/mvc/app/controllers/OPNsense/Diagnostics/Api/NetworkinsightController.php

@@ -259,11 +259,8 @@ class NetworkinsightController extends ApiControllerBase
         $to_date = null,
         $resolution = null
     ) {
-        $this->response->setContentType('application/CSV', 'UTF-8');
-        $this->response->setHeader(
-            'Content-Disposition:',
-            "Attachment; filename=\"" . $provider . ".csv\""
-        );
+        $this->response->setRawHeader("Content-Type: application/octet-stream");
+        $this->response->setRawHeader("Content-Disposition: attachment; filename=".$provider.".csv");
         if ($this->request->isGet()) {
             $backend = new Backend();
             $configd_cmd = "netflow aggregate export {$provider} {$from_date} {$to_date} {$resolution}";