Filter out "Refused to send beacon to 'http://gj.track.uc.cn/" errors in Sentry
We have many errors like this in our client-side Sentry logs:
SecurityError: Failed to execute 'sendBeacon' on 'Navigator': Refused to send beacon to 'http://gj.track.uc.cn/collect?uc_param_str=cpfrveladnkt&appid=4e54ac8a118f<=event&e_c=bottom_ad&e_a=index&e_n=run&domain=gitlab.com&href=https%3A%2F%2Fgitlab.com%2F&isMaxcms=false' because it violates the document's Content Security Policy.
at Error (/)
at n.send (<anonymous>:1:6002)
at n.sendEvent (<anonymous>:1:5379)
at t (<anonymous>:1:13771)
(for example https://sentry.gitlab.net/gitlab/gitlabcom-clientside/issues/128149/)
They seem to be related to UC Browser and not to our code. Therefore we should filter them out.