Nav Unification - updates Ad Control in static data to match canonical WPCom menu item name

[getdave]

Updates menu item Ad Control to be AdControl in the static data in order to better match the menu text in the WPCom code which will create the real menu.

See #45995

cc @davemart-in - just an FYI this is happening and why.

Changes proposed in this Pull Request

• Updates Ad Control in the static menu data to match the canonical AdControl title from WPCom.

Testing instructions

• Comment out this line of code
  

  wp-calypso/client/my-sites/sidebar-unified/use-site-menu-items.js

  Line 24 in ebde236

  dispatch( requestAdminMenu( selectedSiteId ) );

• Apply blog sticker - see paYJgx-Zj-p2
• Build calypso - yarn && yarn start.
• Visit http://calypso.localhost:3000/?flags=nav-unification.
• You should see the menu rendered from the static fallback data.
• Click "Settings" and see the menu expand.
• See the text reads AdControl not Ad Control.

#45995

[matticbot]

Test live: https://calypso.live/?branch=fix/nav-item-ad-control-format

[matticbot]

This PR does not affect the size of JS and CSS bundles shipped to the user's browser.

Generated by performance advisor bot at iscalypsofastyet.com.

[davemart-in]

LGTM! 👍

[getdave]

I'm 100% this change hasn't caused the failing e2e tests. Shipping.