Revert "ref(flags): register LD hook in setup instead of init, and don't check for initialization"#3900

antonpirker merged 3 commits intomastergetsentry/sentry-python:masterfrom

revert-3890-aliu/ref-launchdarklygetsentry/sentry-python:revert-3890-aliu/ref-launchdarklyCopy head branch name to clipboard