fix: Act on allowSentryBreadcrumbs when appropriate (#3037)
fix: Act on allowSentryBreadcrumbs when appropriate (#3037)

The included test, to check for a breadcrumb category starting with "sentry", was improperly written.
getsentry/raven-js,getsentry/raven-js,getsentry/raven-js,getsentry/raven-js