web: do not collect coverage when invoking "jest"
web: do not collect coverage when invoking "jest"

this is annoying when runnig jest --watch=all.

zlorb/mitmproxy,mitmproxy/mitmproxy,mhils/mitmproxy,ddworken/mitmproxy,MatthewShao/mitmproxy,Kriechi/mitmproxy,mhils/mitmproxy,ddworken/mitmproxy,ddworken/mitmproxy,mitmproxy/mitmproxy,cortesi/mitmproxy,ddworken/mitmproxy,MatthewShao/mitmproxy,MatthewShao/mitmproxy,ujjwal96/mitmproxy,StevenVanAcker/mitmproxy,cortesi/mitmproxy,vhaupert/mitmproxy,zlorb/mitmproxy,vhaupert/mitmproxy,zlorb/mitmproxy,mitmproxy/mitmproxy,Kriechi/mitmproxy,StevenVanAcker/mitmproxy,ujjwal96/mitmproxy,vhaupert/mitmproxy,mitmproxy/mitmproxy,MatthewShao/mitmproxy,cortesi/mitmproxy,StevenVanAcker/mitmproxy,zlorb/mitmproxy,vhaupert/mitmproxy,mitmproxy/mitmproxy,Kriechi/mitmproxy,mhils/mitmproxy,cortesi/mitmproxy,Kriechi/mitmproxy,StevenVanAcker/mitmproxy,ujjwal96/mitmproxy,ujjwal96/mitmproxy,mhils/mitmproxy,mhils/mitmproxy