Revert "refactor: When saving a redirect, Retour no longer deletes redirects that have the redirectDestUrl of the redirect being saved as their redirectSrcUrl ([#303](#303))"

This reverts commit 794cbf6.

Author: khalwat

src/services/Redirects.php

@@ -1201,6 +1201,30 @@ public function saveRedirect(array $redirectConfig): bool
                 return false;
             }
         }
+        // To prevent redirect loops, see if any static redirects have our redirectDestUrl as their redirectSrcUrl
+        $testRedirectConfig = $this->getRedirectByRedirectSrcUrl(
+            $redirectConfig['redirectDestUrl'],
+            $redirectConfig['siteId']
+        );
+        if ($testRedirectConfig !== null) {
+            Craft::debug(
+                Craft::t(
+                    'retour',
+                    'Deleting redirect to prevent a loop: {redirect}',
+                    ['redirect' => print_r($testRedirectConfig, true)]
+                ),
+                __METHOD__
+            );
+            // Delete the redirect that has a redirectSrcUrl the same as this record's redirectDestUrl
+            try {
+                $db->createCommand()->delete(
+                    '{{%retour_static_redirects}}',
+                    ['id' => $testRedirectConfig['id']]
+                )->execute();
+            } catch (Exception $e) {
+                Craft::error($e->getMessage(), __METHOD__);
+            }
+        }
         // Trigger a 'afterSaveRedirect' event
         $this->trigger(self::EVENT_AFTER_SAVE_REDIRECT, $event);