Optimize `executePendingRetry` in `js/channelProfile.js` to run zap attempts in parallel using `Promise.allSettled`, improving performance when retrying multiple shares.
Refactor `splitAndZap` in `js/payments/zapSplit.js` to accept `overrideFee` as an argument, eliminating reliance on a global variable and ensuring thread safety during parallel execution.
Update `js/ui/zapController.js` to use the new `splitAndZap` API.
Co-authored-by: PR0M3TH3AN <[email protected]>