bug: fix notifications when not using thresholds (alexjustesen#2464)

Author: svenvg93

app/Listeners/ProcessCompletedSpeedtest.php

@@ -55,7 +55,7 @@ private function notifyAppriseChannels(Result $result): void
     private function notifyDatabaseChannels(Result $result): void
     {
         // Don't send database notification if dispatched by a user or test is unhealthy.
-        if (filled($result->dispatched_by) || ! $result->healthy) {
+        if (filled($result->dispatched_by) || ! $result->healthy === false) {
             return;
         }
 
@@ -104,7 +104,7 @@ private function notifyDispatchingUser(Result $result): void
      */
     private function notifyMailChannels(Result $result): void
     {
-        if (filled($result->dispatched_by) || ! $result->healthy) {
+        if (filled($result->dispatched_by) || $result->healthy === false) {
             return;
         }
 
@@ -130,7 +130,7 @@ private function notifyMailChannels(Result $result): void
     private function notifyWebhookChannels(Result $result): void
     {
         // Don't send webhook if dispatched by a user or test is unhealthy.
-        if (filled($result->dispatched_by) || ! $result->healthy) {
+        if (filled($result->dispatched_by) || $result->healthy === false) {
             return;
         }