Live activity: fix: improve push-to-start safety, backoff, and token-wait behaviour#625

MtlPhil wants to merge 1 commit intoloopandlearn:feat/la-ios17-push-to-startloopandlearn/LoopFollow:feat/la-ios17-push-to-startfrom

achkars-org:live-activityachkars-org/LoopFollow:live-activityCopy head branch name to clipboard