chore: add timezone to quiet hours display message in UI (#10538)

site/src/utils/schedule.test.ts

@@ -84,6 +84,8 @@ describe("util/schedule", () => {
       new Date("2023-09-06T15:00:00.000+10:00"),
     );
 
-    expect(quietHoursStart).toBe("12:00AM tomorrow (in 9 hours)");
+    expect(quietHoursStart).toBe(
+      "12:00AM tomorrow (in 9 hours) in Australia/Sydney",
+    );
   });
 });

site/src/utils/schedule.ts

@@ -206,7 +206,7 @@ export const quietHoursDisplay = (
     display += ` on ${day.format("dddd, MMMM D")}`;
   }
 
-  display += ` (${day.from(today)})`;
+  display += ` (${day.from(today)}) in ${tz}`;
 
   return display;
 };