[CmdPal > Tiem & Date] Fix missing command of FallbackItem (#40048)

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## Summary of the Pull Request

The fallback items of Time & Date plugin missing the command. This PR
add the missing copy command.

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## PR Checklist

- [x] **Closes:** #40029
- [x] **Communication:** I've discussed this with core contributors
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- [ ] **Tests:** Added/updated and all pass
- [ ] **Localization:** All end-user-facing strings can be localized
- [ ] **Dev docs:** Added/updated
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src/modules/cmdpal/ext/Microsoft.CmdPal.Ext.TimeDate/FallbackTimeDateItem.cs

@@ -68,6 +68,7 @@ internal sealed partial class FallbackTimeDateItem : FallbackCommandItem
             Title = result.Title;
             Subtitle = result.Subtitle;
             Icon = result.Icon;
+            Command = result.Command;
         }
         else
         {