text_input: Don't forget to send enter events

When we move from one surface to another we ought to handle leave
for the old one but also send enter for the new one.

rootston/text_input.c

@@ -297,7 +297,9 @@ void roots_input_method_relay_set_focus(struct roots_input_method_relay *relay,
 				relay_disable_text_input(relay, text_input);
 				wlr_text_input_v3_send_leave(text_input->input);
 			}
-		} else if (surface
+		}
+
+		if (surface
 				&& wl_resource_get_client(text_input->input->resource)
 				== wl_resource_get_client(surface->resource)) {
 			if (relay->input_method) {