fix(platforms): trim platform url before validation and storage

--> Having a URL with spaces in the beginning or end would cause the platform to be deleted

app/Models/PlatformModel.php

@@ -145,6 +145,8 @@ class PlatformModel extends Model
 
     /**
      * @param mixed[] $podcastsPlatformsData
+     *
+     * @return int|false Number of rows inserted or FALSE on failure
      */
     public function savePodcastPlatforms(
         int $podcastId,
@@ -165,6 +167,11 @@ class PlatformModel extends Model
 
         $this->db->query($deleteJoinQuery, [$podcastId, $platformType]);
 
+        if ($podcastsPlatformsData === []) {
+            // no rows inserted
+            return 0;
+        }
+
         return $this->db
             ->table('podcasts_platforms')
             ->insertBatch($podcastsPlatformsData);