Dev branch- search bar flickers when action keywords of queries are changed or home page is enabled

[Jack251970]

Issue in codes

This issue is related to these codes:

Flow.Launcher/Flow.Launcher/ViewModel/MainViewModel.cs

Lines 1539 to 1558 in 6799b87

	private void RemoveOldQueryResults(Query query, bool isHomeQuery)
	{
	// If last and current query are home query, we don't need to clear the results
	if (_lastIsHomeQuery && isHomeQuery)
	{
	return;
	}
	// If last or current query is home query, we need to clear the results
	else if (_lastIsHomeQuery || isHomeQuery)
	{
	App.API.LogDebug(ClassName, $"Remove old results");
	Results.Clear();
	}
	// If last and current query are not home query, we need to check action keyword
	else if (_lastQuery?.ActionKeyword != query?.ActionKeyword)
	{
	App.API.LogDebug(ClassName, $"Remove old results");
	Results.Clear();
	}
	}

If Results.Clear() is called, the result list box will be cleared.

But there still needs some time before the result list is filled with new results, which causes the flicker of result list visibility.

These are screenshot from demo video.

With flicker(empty -> e -> empty):

2025-05-07.13-20-40.mp4

Because empty is home query while e is not, Results.Clear() will be called.

Without flicker (e -> ee -> e):

2025-05-07.14-56-29.mp4

Because both queries are global query with empty action keyword, Results.Clear() will not be called.