Bug 1915252 - Add telemetry for use of shift-click/enter in the search bar & address bar. r=urlbar-reviewers,scunnane,daisuke

Differential Revision: https://phabricator.services.mozilla.com/D245704

browser/components/urlbar/UrlbarInput.sys.mjs

@@ -1867,8 +1867,10 @@ export class UrlbarInput {
         null,
         "search-mode-switcher"
       ).uri.spec;
+      // TODO: record SAP telemetry, see Bug 1961789.
     } else {
       url = searchEngine.searchForm;
+      lazy.BrowserSearchTelemetry.recordSearchForm(searchEngine, "urlbar");
     }
 
     this._lastSearchString = "";