fix: restore Windows console mode on shutdown

The deferred Close call on our input reader caused the console mode
to be reset twice, and the incorrect, inner mode was applied last.

tea.go

@@ -442,7 +442,6 @@ func (p *Program) Run() (Model, error) {
 		if err := p.initCancelReader(); err != nil {
 			return model, err
 		}
-		defer p.cancelReader.Close() //nolint:errcheck
 	}
 
 	// Handle resize events.
@@ -468,6 +467,7 @@ func (p *Program) Run() (Model, error) {
 	if p.cancelReader.Cancel() {
 		p.waitForReadLoop()
 	}
+	_ = p.cancelReader.Close()
 
 	// Wait for all handlers to finish.
 	handlers.shutdown()