upload-widget: Correct file input clearing.
upload-widget: Correct file input clearing.

Replacing file input doesn't work for value clearing. The best
way is to clean value directly, which excludes accidentally adding
wrong file after upload-widget validation error.

vabs22/zulip,synicalsyntax/zulip,shubhamdhama/zulip,eeshangarg/zulip,rht/zulip,punchagan/zulip,synicalsyntax/zulip,brainwane/zulip,brainwane/zulip,hackerkid/zulip,jainayush975/zulip,verma-varsha/zulip,christi3k/zulip,jphilipsen05/zulip,jrowan/zulip,brainwane/zulip,brockwhittaker/zulip,christi3k/zulip,dhcrzf/zulip,amanharitsh123/zulip,timabbott/zulip,andersk/zulip,mahim97/zulip,j831/zulip,hackerkid/zulip,punchagan/zulip,amanharitsh123/zulip,jrowan/zulip,j831/zulip,amanharitsh123/zulip,zulip/zulip,ryanbackman/zulip,jainayush975/zulip,eeshangarg/zulip,shubhamdhama/zulip,Galexrt/zulip,Galexrt/zulip,brockwhittaker/zulip,SmartPeople/zulip,timabbott/zulip,synicalsyntax/zulip,j831/zulip,vabs22/zulip,christi3k/zulip,jainayush975/zulip,showell/zulip,kou/zulip,jainayush975/zulip,rht/zulip,dhcrzf/zulip,punchagan/zulip,SmartPeople/zulip,christi3k/zulip,shubhamdhama/zulip,zulip/zulip,jrowan/zulip,shubhamdhama/zulip,mahim97/zulip,punchagan/zulip,kou/zulip,showell/zulip,rishig/zulip,zulip/zulip,Galexrt/zulip,vabs22/zulip,tommyip/zulip,showell/zulip,punchagan/zulip,verma-varsha/zulip,jphilipsen05/zulip,rishig/zulip,shubhamdhama/zulip,timabbott/zulip,jphilipsen05/zulip,rishig/zulip,verma-varsha/zulip,andersk/zulip,brainwane/zulip,timabbott/zulip,kou/zulip,andersk/zulip,j831/zulip,showell/zulip,vabs22/zulip,brainwane/zulip,shubhamdhama/zulip,mahim97/zulip,tommyip/zulip,rht/zulip,kou/zulip,SmartPeople/zulip,brainwane/zulip,SmartPeople/zulip,vaidap/zulip,kou/zulip,vaidap/zulip,jrowan/zulip,ryanbackman/zulip,vaidap/zulip,dhcrzf/zulip,eeshangarg/zulip,mahim97/zulip,dhcrzf/zulip,andersk/zulip,showell/zulip,eeshangarg/zulip,tommyip/zulip,tommyip/zulip,jackrzhang/zulip,vabs22/zulip,ryanbackman/zulip,synicalsyntax/zulip,amanharitsh123/zulip,andersk/zulip,verma-varsha/zulip,vaidap/zulip,shubhamdhama/zulip,mahim97/zulip,verma-varsha/zulip,synicalsyntax/zulip,Galexrt/zulip,zulip/zulip,christi3k/zulip,jackrzhang/zulip,tommyip/zulip,brockwhittaker/zulip,rht/zulip,rishig/zulip,hackerkid/zulip,dhcrzf/zulip,eeshangarg/zulip,brockwhittaker/zulip,showell/zulip,jackrzhang/zulip,rht/zulip,rht/zulip,hackerkid/zulip,jainayush975/zulip,jrowan/zulip,zulip/zulip,brockwhittaker/zulip,jackrzhang/zulip,timabbott/zulip,hackerkid/zulip,j831/zulip,Galexrt/zulip,kou/zulip,jackrzhang/zulip,eeshangarg/zulip,jphilipsen05/zulip,j831/zulip,dhcrzf/zulip,synicalsyntax/zulip,dhcrzf/zulip,SmartPeople/zulip,timabbott/zulip,brainwane/zulip,showell/zulip,ryanbackman/zulip,punchagan/zulip,hackerkid/zulip,synicalsyntax/zulip,jackrzhang/zulip,tommyip/zulip,zulip/zulip,zulip/zulip,rishig/zulip,andersk/zulip,tommyip/zulip,SmartPeople/zulip,timabbott/zulip,ryanbackman/zulip,brockwhittaker/zulip,jainayush975/zulip,amanharitsh123/zulip,eeshangarg/zulip,vaidap/zulip,jphilipsen05/zulip,rishig/zulip,vaidap/zulip,amanharitsh123/zulip,mahim97/zulip,punchagan/zulip,kou/zulip,vabs22/zulip,jackrzhang/zulip,rishig/zulip,Galexrt/zulip,christi3k/zulip,jrowan/zulip,ryanbackman/zulip,jphilipsen05/zulip,hackerkid/zulip,rht/zulip,Galexrt/zulip,andersk/zulip,verma-varsha/zulip