MessageToast blocks all touch input

[bartekpacia]

When MessageToast is shown all input (drags, taps, back button) is ignored.

infotoast_blocking.webm

To show the pointer:

adb shell settings put system pointer_location 1

Repro

I added a button under this line:

TextButton(
  child: const Text('ToastMessage.info()'),
  onPressed: () {
    ToastMessage.info(context, 'hi there!');
  },
),