fix: prevent double repaint when restoring terminal

tea.go

@@ -572,10 +572,11 @@ func (p *Program) RestoreTerminal() error {
 
 	if p.altScreenWasActive {
 		p.renderer.enterAltScreen()
+	} else {
+		// entering alt screen already causes a repaint.
+		go p.Send(repaintMsg{})
 	}
 
-	go p.Send(repaintMsg{})
-
 	return nil
 }