[fix] disable engine ansa by default

Reported-by: https://github.com/searxng/searxng/pull/4575#issuecomment-2813007107
Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>

searx/settings.yml

@@ -436,7 +436,7 @@ engines:
   - name: ansa
     engine: ansa
     shortcut: ans
-    disabled: false
+    disabled: true
 
   # - name: annas articles
   #   engine: annas_archive