test: Address CodeRabbit feedback on REST helpers and analytics spec

Guard undefined response data in find/count helpers and fix grammar in
the analytics spec description.

Author: dblythy

spec/helpers/client.ts

@@ -96,7 +96,7 @@ export async function find<T = any>(
     body: { ...params, _method: 'GET' },
     auth,
   });
-  return (res.data as { results: T[] }).results;
+  return (res.data as { results: T[] } | undefined)?.results ?? [];
 }
 
 /** Count matching objects (count=1, limit=0). Returns the count. */
@@ -111,5 +111,5 @@ export async function count(
     body: { ...params, count: 1, limit: 0, _method: 'GET' },
     auth,
   });
-  return (res.data as { count: number }).count;
+  return (res.data as { count: number } | undefined)?.count ?? 0;
 }

spec/server/analytics.spec.ts

@@ -20,7 +20,7 @@ describe('AnalyticsController', () => {
     expect(args[1]).toEqual({ dimensions: { key: 'value', count: '0' } });
   });
 
-  it('should track a app opened event', async () => {
+  it('should track an app opened event', async () => {
     const appOpenedSpy = spyOn(analyticsAdapter, 'appOpened').and.callThrough();
     await reconfigureServer({ analyticsAdapter });