Bugfix Android: flickering tiles on OpenGL canvas


The comment (in code) felt like a plausible explanation of the problem.

related: https://krita-artists.org/t/making-and-testing-the-android-build-from-source/436/146?u=sh-zam

Test Plan

This is only reproducible on some devices and a few versions of Android. Usually it seems to happen on devices with Android version 10+.

Formalities Checklist

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