Work around firefox webextensions bug #249
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Importing
gloo_timers
in firefox webextension's content script results in an error:LinkError: import object field '__wbg_clearTimeout_65417660fe82f08d' is not a Function
It actually seems to be a firefox bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1787770
This can simply be worked around by refering to timer functions using window object (setInterval -> window.setInterval) which this PR does. I do not think this would impact users outside of webextensions in any way, as window.setInterval and setInterval are the same functions in usual context (but apparently not in content scripts...)