Use shared tracker in network breadcrumbs package#2645

gingerbenw wants to merge 4 commits intointegration/http-errorsbugsnag/bugsnag-js:integration/http-errorsfrom

PLAT-15268/network-breadcrumbs-implementationbugsnag/bugsnag-js:PLAT-15268/network-breadcrumbs-implementationCopy head branch name to clipboard