TimeZonePicker: Fix incorrect country mapping for Asia/Singapore timezone (#105061)

* Fix incorrect country for Asia/Singapore timezone

* Add test

* link to gh issue

* skip test

---------

Co-authored-by: joshhunt <josh.hunt@grafana.com>

packages/grafana-data/src/datetime/timezones.test.ts

@@ -15,6 +15,7 @@ describe('getTimeZoneInfo', () => {
       const result = getTimeZoneInfo('browser', Date.now());
       expect(result?.ianaName).toBe('Pacific/Easter');
     });
+
     it('should resolve for utc timezone', () => {
       const result = getTimeZoneInfo('utc', Date.now());
       expect(result?.ianaName).toBe('UTC');
@@ -24,5 +25,11 @@ describe('getTimeZoneInfo', () => {
       const result = getTimeZoneInfo('Europe/Warsaw', Date.now());
       expect(result?.ianaName).toBe('Europe/Warsaw');
     });
+
+    it('should not think Singapore is in Antarctica', () => {
+      const result = getTimeZoneInfo('Asia/Singapore', Date.now());
+      expect(result).not.toBeUndefined();
+      expect(result!.countries).not.toContainEqual({ code: 'AQ', name: 'Antarctica' });
+    });
   });
 });

packages/grafana-data/src/datetime/timezones.ts

@@ -439,6 +439,12 @@ const countriesByTimeZone = ((): Record<string, TimeZoneCountry[]> => {
         return all;
       }
 
+      // Fix: Only include Antarctica if timezone starts with "Antarctica/"
+      // https://github.com/grafana/grafana/issues/104688
+      if (code === 'AQ' && !timeZone.startsWith('Antarctica/')) {
+        return all;
+      }
+
       all[timeZone].push({ code, name });
       return all;
     }, all);

packages/grafana-ui/src/components/ClipboardButton/ClipboardButton.test.tsx

@@ -23,7 +23,8 @@ describe('ClipboardButton', () => {
     Object.assign(window, originalWindow);
   });
 
-  it('should copy text to clipboard when clicked', async () => {
+  // TODO: flaky https://github.com/grafana/grafana/issues/105102
+  it.skip('should copy text to clipboard when clicked', async () => {
     const textToCopy = 'Copy me!';
     const onClipboardCopy = jest.fn();