Fixed error on webhooks for recycle bin operations

Updated the getUrl method on deletions to not require any passed
params to align with usage in webhooks.
Probably better to have a proper interface but would require a wider
change.

Fixes #3154

app/Entities/Models/Deletion.php

@@ -59,7 +59,7 @@ class Deletion extends Model implements Loggable
     /**
      * Get a URL for this specific deletion.
      */
-    public function getUrl($path): string
+    public function getUrl(string $path = 'restore'): string
     {
         return url("/settings/recycle-bin/{$this->id}/" . ltrim($path, '/'));
     }

app/Entities/Models/PageRevision.php

@@ -46,19 +46,10 @@ class PageRevision extends Model
 
     /**
      * Get the url for this revision.
-     *
-     * @param null|string $path
-     *
-     * @return string
      */
-    public function getUrl($path = null)
+    public function getUrl(string $path = ''): string
     {
-        $url = $this->page->getUrl() . '/revisions/' . $this->id;
+        return $this->page->getUrl('/revisions/' . $this->id . '/' . ltrim($path, '/'));
-        if ($path) {
-            return $url . '/' . trim($path, '/');
-        }
-
-        return $url;
     }
 
     /**