DEV: Change bookmarkable registration to use new plugin API (#230)

Relies on core PR https://github.com/discourse/discourse/pull/20556
to be merged first.

.discourse-compatibility

@@ -1,3 +1,4 @@
+3.1.0.beta1: 0f6b30c2d84d44978be1c845267609446ca9dbf2
 2.9.0.beta8: 729e5a2add46fb4e2d8ed092da05a87ebbfcf05b
 2.9.0.beta6: 272e9dd760f82e33f9756866434ddcbe470cdb8e
 2.9.0.beta2: e7c19ac107dcd37618c7ac7b98530e99c7fe31db

plugin.rb

@@ -899,7 +899,7 @@ SQL
        )
 
   # Making DataExplorer::QueryGroup Bookmarkable.
-  Bookmark.register_bookmarkable(DataExplorerQueryGroupBookmarkable)
+  register_bookmarkable(DataExplorerQueryGroupBookmarkable)
 
   require_dependency "application_controller"
   require_dependency File.expand_path("../lib/queries.rb", __FILE__)

spec/lib/data_explorer_query_group_bookmarkable_spec.rb

@@ -31,9 +31,11 @@ describe DataExplorerQueryGroupBookmarkable do
 
   before do
     SiteSetting.data_explorer_enabled = true
-    Bookmark.register_bookmarkable(DataExplorerQueryGroupBookmarkable)
+    register_test_bookmarkable(DataExplorerQueryGroupBookmarkable)
   end
 
+  after { DiscoursePluginRegistry.reset! }
+
   # Groups 0 and 1 have access to the Query 1.
   let!(:query_group1) { Fabricate(:query_group, query: query1, group: group0) }
   let!(:query_group2) { Fabricate(:query_group, query: query1, group: group1) }