fix godot warning

src/SharpIDE.Godot/Features/Build/BuildPanel.cs

@@ -30,7 +30,7 @@ public partial class BuildPanel : Control
 
     private async Task OnBuildStarted(BuildStartedFlags _)
     {
-        _terminal.ClearTerminal();
+        await this.InvokeAsync(() => _terminal.ClearTerminal());
         _buildOutputChannelReader ??= _buildService.BuildTextWriter.ConsoleChannel.Reader;
     }
 }

src/SharpIDE.Godot/Features/TerminalBase/SharpIdeTerminal.cs

@@ -37,6 +37,7 @@ public partial class SharpIdeTerminal : Control
 		_previousArrayEndedInCr = text.Length > 0 && text[^1] == (byte)'\r';
 	}
 
+	[RequiresGodotUiThread]
 	public void ClearTerminal()
 	{
 		// .Clear removes all text except for the bottom row, so lets make sure we have a blank line, and cursor at start