file size limit notification can't be dismissed and remains persistent until reload

[gregs007]

Can currently be observed on all newer versions of RocketChat, including open.rocket.chat. Screen recording at https://youtu.be/w24BR4FVPHM

When file over size limit is attempted, notification can't be dismissed and remains persistent across channels until app reload.

[ricardojrgpimentel]

Every attempt at uploading a file, if it fails the notification cant be dismissed too.