(core) Don't override search on Code View and Access Rules pages.

Summary:
On some pages, Grist search doesn't work, so better to omit it and give
a chance to browser's native search.

Test Plan: Existing search tests should pass. Tested manually that shortcuts now open native browser search on Code View and Access Rules pages.

Reviewers: jarek

Reviewed By: jarek

Differential Revision: https://phab.getgrist.com/D3703

app/client/ui2018/search.ts

@@ -171,6 +171,8 @@ export function searchBar(model: SearchModel, testId: TestId = noTestId) {
     searchWrapper.cls('-expand', model.isOpen),
     dom.autoDispose(commandGroup),
     dom.autoDispose(lis),
+    // Make sure we don't attempt to call delayed callback after disposal.
+    dom.onDispose(() => toggleMenu.cancel()),
     cssHoverCircle(
       cssTopBarBtn('Search',
         testId('icon'),