Fix "Edit board" in issue board

ee/app/views/shared/boards/_switcher.html.haml

@@ -42,6 +42,6 @@
       ":project-id" => "Number(#{@project&.id})",
       ":group-id" => "Number(#{@group&.id})",
       ":can-admin-board" => can?(current_user, :admin_board, parent),
-      ":scoped-issue-board-feature-enabled" => parent.feature_available?(:scoped_issue_board),
+      ":scoped-issue-board-feature-enabled" => parent.feature_available?(:scoped_issue_board) ? 'true' : 'false',
       "weights" => [Issue::WEIGHT_ANY] + Issue.weight_options,
       "v-if" => "currentPage" }