(core) Remove the aclUI=1 flag and add 'BETA' tag to the Access Rules page name.

Summary:
- Remove support for aclUI=1 URL parameter, making it the default.
- Add 'BETA' tag to the Access Rules link in side panel.
- Remove all mentions of aclUI=1 in tests.

Test Plan: Updated tests should pass

Reviewers: paulfitz

Reviewed By: paulfitz

Differential Revision: https://phab.getgrist.com/D2766

app/client/ui2018/menus.ts

@@ -255,8 +255,8 @@ export function menuItemCmd(cmd: Command, label: string, ...args: DomElementArg[
   );
 }
 
-export function menuAnnotate(text: string) {
-  return cssAnnotateMenuItem('Beta');
+export function menuAnnotate(text: string, ...args: DomElementArg[]) {
+  return cssAnnotateMenuItem(text, ...args);
 }
 
 export const menuDivider = styled(weasel.cssMenuDivider, `