Fix local-only toots not being returned by the local TL API

Fixes #1389

app/controllers/api/v1/timelines/public_controller.rb

@@ -29,7 +29,7 @@ class Api::V1::Timelines::PublicController < Api::BaseController
       params_slice(:max_id, :since_id, :min_id)
     )
 
-    statuses = statuses.not_local_only unless truthy_param?(:allow_local_only)
+    statuses = statuses.not_local_only unless truthy_param?(:local) || truthy_param?(:allow_local_only)
 
     if truthy_param?(:only_media)
       # `SELECT DISTINCT id, updated_at` is too slow, so pluck ids at first, and then select id, updated_at with ids.