[FSSDK-11446] update: experiment_id and variation_id added to notification listener payloads#1030

FarhanAnjum-opti merged 5 commits intomasteroptimizely/javascript-sdk:masterfrom

farhan-anjum/FSSDK-11446-add-exp/var-id-to-notif-listeneroptimizely/javascript-sdk:farhan-anjum/FSSDK-11446-add-exp/var-id-to-notif-listenerCopy head branch name to clipboard