report: Fix path to find webpack bundle source maps.
report: Fix path to find webpack bundle source maps.

The previous code only worked for release tarballs, which has the
source maps in both places.

hackerkid/zulip,rht/zulip,brockwhittaker/zulip,dhcrzf/zulip,vaidap/zulip,hackerkid/zulip,synicalsyntax/zulip,mahim97/zulip,zulip/zulip,Galexrt/zulip,punchagan/zulip,timabbott/zulip,rishig/zulip,showell/zulip,vaidap/zulip,brainwane/zulip,amanharitsh123/zulip,hackerkid/zulip,mahim97/zulip,dhcrzf/zulip,brainwane/zulip,rht/zulip,amanharitsh123/zulip,andersk/zulip,dhcrzf/zulip,synicalsyntax/zulip,eeshangarg/zulip,synicalsyntax/zulip,mahim97/zulip,Galexrt/zulip,punchagan/zulip,rht/zulip,rishig/zulip,zulip/zulip,rishig/zulip,verma-varsha/zulip,vaidap/zulip,timabbott/zulip,tommyip/zulip,kou/zulip,eeshangarg/zulip,brainwane/zulip,showell/zulip,verma-varsha/zulip,andersk/zulip,zulip/zulip,timabbott/zulip,kou/zulip,tommyip/zulip,showell/zulip,tommyip/zulip,jackrzhang/zulip,andersk/zulip,brockwhittaker/zulip,Galexrt/zulip,punchagan/zulip,andersk/zulip,synicalsyntax/zulip,shubhamdhama/zulip,amanharitsh123/zulip,jackrzhang/zulip,brainwane/zulip,kou/zulip,hackerkid/zulip,brockwhittaker/zulip,jackrzhang/zulip,amanharitsh123/zulip,hackerkid/zulip,rht/zulip,synicalsyntax/zulip,jackrzhang/zulip,mahim97/zulip,brainwane/zulip,kou/zulip,amanharitsh123/zulip,punchagan/zulip,rishig/zulip,brainwane/zulip,dhcrzf/zulip,jackrzhang/zulip,synicalsyntax/zulip,shubhamdhama/zulip,showell/zulip,shubhamdhama/zulip,brockwhittaker/zulip,verma-varsha/zulip,kou/zulip,shubhamdhama/zulip,tommyip/zulip,verma-varsha/zulip,tommyip/zulip,mahim97/zulip,eeshangarg/zulip,zulip/zulip,Galexrt/zulip,andersk/zulip,timabbott/zulip,rht/zulip,shubhamdhama/zulip,mahim97/zulip,brockwhittaker/zulip,vaidap/zulip,showell/zulip,zulip/zulip,eeshangarg/zulip,timabbott/zulip,brainwane/zulip,synicalsyntax/zulip,hackerkid/zulip,shubhamdhama/zulip,showell/zulip,showell/zulip,brockwhittaker/zulip,Galexrt/zulip,rishig/zulip,dhcrzf/zulip,dhcrzf/zulip,rht/zulip,eeshangarg/zulip,timabbott/zulip,zulip/zulip,eeshangarg/zulip,timabbott/zulip,Galexrt/zulip,kou/zulip,kou/zulip,hackerkid/zulip,verma-varsha/zulip,jackrzhang/zulip,verma-varsha/zulip,andersk/zulip,dhcrzf/zulip,vaidap/zulip,punchagan/zulip,jackrzhang/zulip,amanharitsh123/zulip,rishig/zulip,shubhamdhama/zulip,vaidap/zulip,tommyip/zulip,tommyip/zulip,punchagan/zulip,zulip/zulip,andersk/zulip,eeshangarg/zulip,rishig/zulip,rht/zulip,Galexrt/zulip,punchagan/zulip