critical in accessible::tests::test_accessible_update_state

[felinira]

Bug description

Running accessible::tests::test_accessible_update_state causes a critical that looks a little concerning.

Maybe it could be useful to set fatal criticals in tests? Or would that cause too many flaky tests?

test accessible::tests::test_accessible_update_state ... ok

(process:1000119): GLib-GObject-CRITICAL **: 18:07:29.862: g_value_get_pointer: assertion 'G_VALUE_HOLDS_POINTER (value)' failed

[sdroege]

Generally a good idea to make criticals fatal and we do that in gtk-rs-core (I hope!) and gstreamer-rs (definitely)

[felinira]

I wanted to get a backtrace and now I can't reproduce it anymore. sigh.

Feel free to close if you can't either, I've been doing too much stuff with my screenreader today that might have messed up gtk in some way.